The RS210 is one of those 'steals' when it comes to performance.
When I bought mine, I didnt know exactly what it would look like or what Id make of it compared to my other cabs. I HAD heard one with an RS212 and the RH450, but I didnt get close upto it.
I waited for the new finish RS cabs to hit the UK, and Im glad I did.
There is a cab/amp expert on Talkbass who has all the high end gear, and he put this RS210 right up there as one of the best 2x10s (despite its lower price compared to the slightly lighter neo loaded cabs).
Its pretty light, well made, and the tone is great. It seems to favour a quite clear, low mid focussed tone, with a tight bass response. You wont be lacking in bass though!
The best part is the high end. The tweeters are very very smooth (probably the smoothest Ive used) and doesnt have that tacky cheap plasticky treble response you can get from even the most expensive cabinets. Smooth high end, but if you put a lot in, you will get as much snap and modern twang as you want.
Nice cabs, a cover is a must!