Almost any work if you're good enough with them (with a few exceptions) but the best to play perkless with would be either the HVS45 or carby. It's more about which ones to avoid playing perkless with than which ones you should play perkless with. The best grenade for perkless playing is the flashbang.
The best ones, in no particular order: SCAR Carby Hive Cannon Phase Rifle HVS45 AR-C Eclipse Dark Star mp5 Ones you should avoid: Deatomizer Widowmaker Aegis Device Unless in HC, Shrieker and Warpy SPAS (with all the EF SPAS or even just people with Light Armor, you'll be at a huge disadvantage) Strike Rifle
Some of the best music in gaming: the Freedom Fighters OST http://www.youtube.com/watch?v=5KHK46y_He4&list=PLXQy_o x7fQ3VNAeoBsoqIzzcvjRKy_rpT