I have an SX3 and share the sentiment about how it performs when a bit dirty. I clean my gun after every hunt and it will still jam at least twice a day. This same experience happened to a buddy of mine with his SX3. I have two other friends with the same gun as well (we actually bought four together to get the best deal) and they have never had any problems.

If you're stuck in that price range, I'd try to save a bit of money and go with a 11-87.

If you can scrounge a bit more together, I'd get an SBE II and you will never have to buy another semi-auto again.

My .02