My Favorites:
Benchmade Adamas 275 Definitely the thickest feeling handle of this group, with a very stout blade, probably not the best slicer but feels the most solid overall
Benchmade Contego 810 (CPM-M4) Just got this one Friday, and am really liking it, nice thick 4" blade, lots of jimping and grip.
Spyderco Manix 2 XL (Still nice and beefy with a handle that really locks into your hand, but FFG so it will be a better slicer/cutter than the others)
ZT 560 (Elmax) The most expensive by about $100, but some great features, probably the nicest overall as far as steel, KVT, titanium, etc.
ZT 200 Very solid and feels the largest overally, super beefy and solid linerlock and pivot, just as smooth as the 560 IMO at half the price.