I have the original LC9 and love it. I also have an XDSC9 and TCP 380.
The LC9 feels great in the hand. I actually like the trigger pull. I carry it in a neoprene blackhawk IWB and it feels great. I also have a crossbreed supertuck for it and it feels great in that too. I can wear it with sport shorts, cargos, jeans, dress pants ect.. and forget it's there.

The TCP is for mainly when wearing sport shorts as it's so light and a point and shoot gun. I use the same neoprene holster for it. It also goes in the pocket with no problems, long trigger pull like the LC9. The LC9 will go in the pocket but I find it just a tad too heavy, not by much so it's doable and many people do.

The SC is double stack so don't wear it much, but when I do it's with a crossbreed supertuck and a stiff belt, then it's not too bad but have to be wearing baggier pants/shorts due to the size.

If I had to buy again the LC9 would be my first again. I can't say enough good about it. A friend bought one at the same time and feels the same way. We shoot lots of different pistols and that one just fits. Go to a store and hold a LOT of them, that will let you know what's for you and what's not. A glock, NOT for me.