alright man, i'm sorry then
So time to get me a g502 then... BUT SO FUGLY. Anyho.. I like heavier mice better than light mice for FPS also. When I'm sniping or camping (yes I'm a coward sometimes), the weight helps me more for long distance precision. A light mouse only helps me when I'm jumping around like an idiot or in the middle of an arena with 20 players. But not so much for the rest. But I must admit.. I don't do Quake so perhaps Quake is different and all.
i agree that the g502 is really, really ugly.. and i feel the same way about pretty much all current logitech mice like the g402, g900, g303.
one of the biggest complaints about the g502 is probably the weight, so i hope you're sure about digging heavy mice.
but if you think that the shape is right for you, it should be a great pick. :-)
also, i've noticed they started showing up second-hand for decent prices, so you could consider getting a used one.
when i'm "fishing" for mice i usually just save searches so that i get e-mailed once a day, if one has popped up.
(there's actually
one for 35 on marktplaats right now - picture isn't great, but it looks like it's on good shape)
but i know some people don't like used products, so it's not for everyone i guess :-)