Well, I had some reliability problems with my EAA Witness 10mm at first, but the problem was quickly diagnosed by my friends at glocktalk.com to be an older (read; "defective") magazine follower. One e-mail to EAA had a new follower sent to my house in a couple of days, and no hiccups since. That includes some CCI Blazer, Ten X, Cor-Bon, and PMC Starfire ammunition. It handles them all with no problem.
Overall, I am extremely impressed with this gun. It isn't a tackdriver, but it is plenty accurate when I do my part, and since the follower switch, reliability has been perfect. The recoil of the gun is by no means outrageous, but it does have a bit more snap than a .45, but that is to be expected for a 10mm. The feel of the gun, its grip, and the layout of the controls is one of the best I have felt, and I handle a lot of guns.
All in all, I say get the gun. The customer service that I recieved from EAA was wonderful, and the gun has impressed me to no end. For aroud $300 or so, you just can't go wrong. The only question I have about these guns regards the long-term durability with full-power loads. For answers to that question, I defer to those with more expertise than I.
I hope this helps.