i live in canada, where above a 4in blade is illegal, so my personal favourite is my coldsteel tilite. looks like a switch blade, but is a folding lock blade. no assist, but is a pocket-trip so when you pull it out it deploys (if you want, takes a bit of a twist and pull for it to deploy) and it has a second edge half in, so to have dual blades it takes about 20 minutes with a sharpener. pretty nice, looks cool and is super useful, especially if you want quick one handed deployment.