Which amp should i get?

There both good amps however i would go with Polk all the way. I have a 1200.1 amp from them and it is an absolute monster. I have not found a single problem with that amp and I'm pushing 2 Polk audio 12" SR subs. Kenwood is a good brand also but part of the fun of making my system was to get pieces most people don't, therefor i decided to go Polk with everything because their hardly seen around. Between the two you posted the Kenwood may perform better because it's rated 120 watts higher than that Polk amp and Polk doesn't make a 1000 watt amp, it goes up to 1200 watts, so you would go up a lot in price. So for price and what you might need to power your woofers Kenwood may be a Cheaper way to go about it but if you look around a bit you may find cheaper prices online. For example i found both of the amps you posted for about $100-130 on another site that i know is completely reliable to buy from. Another thing i did was compare reviews when i was first deciding what to get for my system so you may want to go to different sites where people have bought those different amps and see what they have rated and said about the products. For those saying Polk isn't as good only because they haven't been around as long are dumb in my opinion. Your right, being that Kenwood did start in 1946 and Polk in 1972 but to think that makes a difference is a joke. I doubt they made a big head start with technology from starting in 1946... Basically, the 26 years Polk was not there did not effect what there making today. Polk quality is superior to many in my opinion and thats why I would go with them.