FETs can be a good upgrade if you find them for cheap. Think about it though... this person probably bough some 4652's from some buy on ebay for $4-5 each.... Then he tried to stack them on a board and wrecked them. He asks mommy and daddy for another one, and of course they don't know he's wrecking them. To make him happy they buy him another one..... now he wrecks that one.

Soldering can be tricky if you don't know what you're doing. When it comes to FETs, it's really important to clean off the soldering pads so you have a flat surface to start with, and use some flux to help the solder flow to where it's supposed to and help it from going where it's not supposed to.

You need a very steady hand, a set of helping hands, and patience. If you mess something up, don't fix it with a soldering iron.... get the desolder braid and start over if you have to. I'm pretty good at doing FETs, haven't wrecked any yet, but I also started soldering in 5th grade.