I'm looking to experiment with some fuzz pedals, which do you think I should try. I like the fuzzes used by silversun pickups and MGMT. I like things that sound different. Don't know much about fuzzes. Opinions?
Several in that price range, but my favorites (which are fuzz faces) would have to be the Dunlop JH-F1 or the Analogman standard SunFace... but if I were in your situation I'd spend the extra $35 and get the NKT275 Sunface by Analogman. It's one of the best fuzzes out there...
You can get several different types of Big Muff varieties in that price range as well. And, if you're handy with a soldering iron, head over to Build Your Own Clone and/or General Guitar Gadgets, and you could get yourself 3 or 4 different kits (fuzz faces, muffs, tonebender mkII) for that price and figure out which you like best!
Monsterpiece fuzz pedals are all $110, they sound awesome, and there are a lot of models:
Classic - pretty much a Germ Fuzz Face Clone
PNP - SiGe hibrid based on the Fuzz Face (but still different)
NPN - Silicon Fuzz, also based on Fuzz Face, more transparent
MKII - ToneBender Clone
AD 2000 - 'biker fuzz'
The Fuzz Face style pedals (and maybe the others, I don't know as much about them) all have a bias knob that allows you to change the character of the fuzz, going from really fuzzed out, to a much more transparent distortion type sound. I think it does this by regulating the power supply... not really sure.
If you are interested, the builder hangs out on HCFX under the moniker duderanimous, and that is the main way to contact him. There is a huge thread (2,063 posts) all about these pedals. The folks there will give you the low-down, and Richard (the builder) will answere any questions you have, he is a really cool guy.
I wouldn't go spending $300 or more on a Fuzz unless you knew for sure it was "the one" you wanted, but having said that, the best fuzz you can get IMHO is a Analogman Sunface and it will cost you $235 for the NKT-275 version.
Fuzzes aren't like distortion pedals where you either like the sound or you don't. They are more picky about what you have plugged into them and what you have them plugged into. Don't plug an Ibanez RG-550 into a fuzz and then to a Gorilla amp and expect anything good to come of it.
Also, there are a lot of manufacturers out there making cheap "fuzzes" that if you tried the wrong few would totally turn you off to fuzzes altogether when in fact the right fuzz can become the cornerstone of your whole sound.