Ya you could get something newer for less than $400. I just found some
2010 RockShox Recon U-Turn's for $367.
I'm personally a Marzocchi fan and their 2010 stuff was built with reliability being a primary concern. From what I read
here I don't know if Rock Shox had the same idea. They also have a lot simpler modeling scheme then RS. Not 16 different models for one line of fork.
With that said here are the Zokes in your price range:
2010 22 RLO. An entry level fork (pretty poor damping) with rebound adjustment and lock out. It also has steel stanchions so it's going to be kind of heavy. 100mm of NON adjustable travel. Only $168.
2010 44 RLO. This has rebound adjust and lock out just like the 22 but uses aluminum stanchions instead of steel so it's going to be lighter. Internally adjustable between 100-120mm of travel. You can also buy additional spacers from Marzocchi to spec the fork at 80 or 140mm of travel. It still kind of lacks in the damping department though. $258.
2010 44 TST2 Air. The best 2010 fork you can get in your price range. TST2 has a bit better damping than the forks above. Like floodgate for RS, TST2 allows you to gradually set the blowoff valve for the lockout. Internally adjustable between 120-140mm of travel. $348.
Also, both of the 44 series forks use an air spring so you don't have to fiddle with finding the right coil for your weight. Just add or remove air. All forks from all manufacturers need to be serviced on an interval for proper performance. Fox's issue: less oil=less weight but also means more intervals of service.