Pegs, from what I understand silk wraps are almost like acrylics, not good for your natural nail. I have never had them though, so I don't know for sure.
I did want to put in a plug for T.I.P.S! http://www.askcosmetics.com/tips.htm
This stuff is awesome. I had the longest, hardest, strongest nails ever when I used this stuff
In my opinion, you need 3 things to have the greatest nails of your life. A buffer (I like the cube ones), a glass nail file
, and T.I.P.S.
ETA: You can get this stuff from QVC too.