Strengths: low price, good quality, it realy works
Weaknesses: no enough power or inital bite
Overall: a good allround performer that works well both wet and dry, low price and running costs(pads £10:00) make this a good brake to put on any bike. fairly easy to set up to.
Strengths: cheap, easy to fit, standard levers and cables
Weaknesses: get contaminated, but nowhere near what the hydraulic version does. so be thankful! need some grip to achieve good braking power (luckily i've got a strong grip!)
Overall: due to heavy weight only suitable for jump bikes, have a good look at formua activa for xc use don't have the annoying rim brake problems now (buckled wheels affecting braking and mud between pads and rims!)
Strengths: Fit and forget, been on the bike for 9 months, no mucking about required. An awful lot cheaper than Hopes. Can lock up and slide 2.3" front on gravel hairpin, so enough power for me.
Weaknesses: Not very good in the freezing cold - need to warm up a bit before they really start to work properly. Dont loose the yellow adjuster thingy, needed to adjust when pads start to wear. Hydraulic rims brakes (Magura) might be a better buy for you. (I have these on my other bike).
Overall: Stops well, no real maintenance (so far!). Cheap.
Strengths: Great wet weather stopping Cheap Sturdy Easy to fit Seem to last well (too early to be sure) Use a standard lever
Weaknesses: Heavy Not very powerfull Heavy Cables still prone to problems with mud etc. Heavy
Overall: In the dry I'm not sure these are really any more powerfull than a good set of V-Brakes. But that performance doesn't drop off in the wet like V's do, and they don't wear away at the rims either. Very heavy, but then at least that makes them tough. And for the money you really can't complain.