Great product > Great service > best of all > Great price!!!

The ball are definitely premium and well deserving of their superb reputation. They have a nice feel and a consistent bounce. I usually play between 90-120 minutes and the balls did not show much degradation during that time period.

When I open other cans of balls there is a nice hiss when the can is depressurized. I was surprised when the sound emitted by the Diadem can when opened was more like an explosion than a hiss. The sound startled me and my hitting partner.

Lastly, I am not sure what happened to the case or box housing the 24 cans because it arrived in terrible condition. The box was ripped, torn and tattered badly and a lot of tape was used to make sure the box held together. Not a good look and not sure what happened there. But at least the case contained all 24 cans and the cans appear to be fine.

Bounce last multiple hits, much better than Penn or Dunlop!

Got them on sale and they are a better option than penn or wilson I can get locally

Balls. These balls are on par with other similar penn and Wilson balls. Three cans, so far, we had no issues. My tennis group have been purchasing case of balls for the season for about 6 years. Typically, you get what you pay for but these ball may be the exception? Durability seems to be on par with Pennpros but are not as ‘lively’ straight out of the can. @25% discount they are excellent value.

These are high quality balls at a fair price. I have used the cheap Penn's, the cheap Dunlop's, the ATP Dunlop's, Penn Marathon's and Penn Tour balls. The Diadem balls are not too bouncy like the cheap Penn's and do not die quickly, like Wilsons, they are neutral and durable. I will continue to use them.

I bought a couple cases and passed them out to all my tennis group friends, so we have good balls for a month. :) I am Mr. Balls. They are decent quality and seem comparable to major brands, try them and see.

These extra duty Diadem Premier tennis balls are of excellent quality and I get more consistent play than other tennis balls I have used. I was using U.S. Open tennis balls, but after this purchase I will definitely buy more Diadem since they are a better deal and play just as good if not better.

love the product since last year. Purchased a 2nd case at bargain price. It’s as good as Propenn extra duty.

I love these balls. I have been a US Open Wilson ball user almost exclusively. I think these balls are just as good and more consistent. I open a fresh can for every session but the balls last 2-3 sessions which for me is around 6 hours. I highly recommend them.

Medium speed ball, plays in the middle of a Dunlap AO and Wilson US OPEN, does not fluff up like AO, very playable after two hard sets, marginally acceptable if you go three.

A very nice ball. Offers very good feel, great bounce and lasts longer than most balls. A bit heavier than US Open balls but they last way longer than USO balls. I would say similar to / between Dunlop AO or Dunlop Grand Prix. A tad pricey but I still highly recommend. (longer lasting and better feel than the Diadem Team ball)

Great balls. They last longer than Wilson extra duty and also have amazing balance of power and control

Good deal for quality balls, already lost 2 :(

Good balls, last well through a full match. Heavier and denser-feeling than most balls, so not the best for those with elbow/wrist problems or for players under 4.0-4.5.

Their slides are made out of hard plastic,so they hurt you're in step. They charge you for shipping even though your amount is over the free shipping amount. Then, when you return the product, they charge you for shipping again.

Played Diadem Premier Hard Court with friends last night. Everyone thought they were great and bounced consistently.

Very consistent!!! Great ball

Best tennis balls ever. Very good quality and last long.

Great balls honestly, they hit like Wilson HD's

Love these!

Pretty good initial thoughts. Plays well.

Durable and consistent

Great quality!

Very high quality for hard courts! Great value with the discount on sale!

Quality balls, exceptional customer service.

I use the tennis balls to practice serving.
So far I have used them for 3 days and they are retaining the pressure very well.
I used them today for the fourth time and will now re-pressurize them for 48 hours.
Based on my using the balls for practicing my serve only and re-pressurizing them after a fourth use the balls should last me until the end of September.
Thank you. I love these tennis balls.

Long lasting balls, nice fell, if I had to nitpick I would like the ball to feel a little lighter. Great for ball machine after a days of play.

Great quality balls

My favorite ball, better than Wilson US Open and penn tour. We even call it an AI ball because of the way it translates our intentions into reality.

Excellent balls! The quality & durability are top notch based on my recent (and new) experience during the last week. I've already ordered a second case!

good packaging, balls play great on hard court