We use the 3Par F400's and now the newer 7400s for our entire VM environment. The arrays have been rock solid, with outstanding performance. Any time you can take an array rated for 12k IOPS and run it up to 40k (no joke, because some developer made a teeny tiny code change) without the place coming crashing down you're onto something.
If you are using an EVA today a 3par array will work fine, my one piece of advice is to make sure the configuration is done following 3par best practices, not EVA best practices. I'm hearing a lot of issues from HP sales guys trying to configure the 3par's the same way they would an EVA.