11-29-10. This will not be a standard review but will have some helpful hints---hope it will help you.
My Goal was to find (using reviews and ratings) the best dual suspension/disk brake mountain bike
for under 300 dollars
Based on reviews and ratings from different web sites it came down to the following three.
1. GMC Topkick, made by Kent Bicycle.
2. Polaris RMK made by Ming Cycle in Taiwan (seen above)
3. Victory Vegas Low---Ming Cycle

Although the GMC Topkick is a 4-star bike, I ruled it out because it is more bulky looking and it
is a few pounds heavier than the other 2 bikes and there were many reviews claiming a front dérailleur
shifting (inherent) problem and complaints the handlebars could not be raised.

The Polaris RMK comes in with great reviews and a 4 1/2 star rating. But in just one day Amazon raised
its price from 199 dollars to 267 dollars(nov 20,2010). -----After some more investigation it... Read more

This bike arrived damaged. The box was torn open, and the crank was bent and destroyed. Even if it had arrived intact, the bike is considerably smaller and of a lesser quality than advertised. I still have not received my reimbursement, although I have sent the product back and submitted my return form at amazon.com. A COMPLETE WASTE OF TIME AND MONEY!

I read all of the reviews, thought that it was going to be a great bike. It came with a flat, the rear brakes did not work, the front brakes eventually gave out (2 weeks) the gears hardly switched, and it just felt like riding a bike that had 200 miles on it. I ended up returning the bike, it was really bad. Every time I went and road this bike, I had to tweak it and fix it when I came back. SAVE YOUR TIME AND MONEY, DO NOT BUY THIS BIKE. I suggested my friend buy it as well, and he had all of the same problems as I did. I don't know who reviewed this, but it was just pathetic. DO NOT BUY!!!
On a positive note, it only took me 5 days to get my money back after returning it. DO NOT BUY! I'm not kidding this thing is a real piece of junk.