The Ruger P95 is one of the heaviest polymers you'll find. They're great pistols, but I sold mine so I could get a CZ75. If I was looking for something on the cheap I'd get a Witness 9mm. Much the same feel as your CZ, but for about $100-$150 less. I've had my CZ about the same time as you and since have acquired a Witness-P .45ACP. It's only about $250 to change calibers, the feel is right up there with my CZ (except polymer, thus lighter), you can find them on gunbroker.com for $350 in both steel and polymer, etc. Another vote here for an older Smith metal-framed 9mm. I almost had my hands on a pretty sweet 39-2. I was seriously hours away from getting it and someone else swooped in and picked it up. $375 would have put it in my holster.
I'd forgotten all about those FM Hi-Power's. I've thought twice about getting one, the second time around my CZ showed up and I lost track of all other possible firearm deals. However, that 5906 for $330 is a sweet deal. If I hadn't just picked up my Buckmark I might have picked one up.