Which recording software is better for PC gaming

[videogaming]

I'm a newbie LOL gamer, I want to record some game videos to communicate with other LOL gamer on the forum, I found some recording software available via google, they are Smartpixel, Bandicam, Fraps, Movavi, Playclaw, I tested all the demos in these two days, I prefer Smartpixel and Fraps currently according to my ability and budget as well as the reviews by other gamers. However, Smartpixel has no high frame rates but fluent and it has a video editor tool to help me edit the game videos, Fraps is a little lag although I have a I7 CPU and 2Gb graphic card, I'd like to know if you guys have any good suggestions according to your own experience, which recording software is better for PC gaming.