the first one is a 555 circut. there is alot of soldering involved to get this assembled, but I have never had one break..LOL
the second is a nochip mod, which I would strongly recomend you stay away from, there are so many things that could go wrong. and over prolonged use I beilieve it will lead to premature controler death (kind of like smoking LOL)
I agree with ichagowill the cod4 wrapid reload is nice. but not good for cod5. I use a 4 mode chip, set up for my 4 fav games.