P7's have their downsides, the xre-r2s and xpg r-5s (someone sent link before) have their own followings, depending on riding conditions. Throws are better with these than the P7, also they are both more efficient than p7.

r2:

http://www.dealextreme.com/details.dx/sku.29096

r5:

http://www.dealextreme.com/details.dx/sku.42972

Advice : there are some people that are knowledgeable flashoholics. Buy what they recommend.