I like Whatchu Got and Lost Ones. The samples are really good. The only thing I would recommend is that you improve your percussion. What I mean is they sound a bit too "Fruity Loop-ish" if you know what I mean. I use FL Studio7 as well, but I would highly recommend laying off the built-in percussion samples, their really weak.
BTW, have you ever thought about making an original beat based on your ability to play the keyboard? So minimal sampling and more of you laying down the melodies yourself. I'm not sure if you can play the keyboard, but I recommend to start learning, that way you can add-in your own shit like basslines, strings, etc... to the sampling you already do.
BTW, check out the beat I did last night. Not sure if you heard it.
http://www.zshare.net/audio/94246934a7f66f/
It needs more variation, but I sampled the guitar from a Gypsy Kings song and added in the drums, strings and piano myself.