That's interesting on the 10/22T price - when I bought my carbine, the gun shop had the same gun for... ::gulp:: ... $409!!
What a markup! I paid about $25 over the WalMart price, but I believe in supporting the local store once in a while, out of principle. Otherwise, there won't be any small guys left, like when Blockbuster moved into my town and put five family-owned businesses out of commission.
Anyway, I've never shot the Remington, but the Ruger had a very solid, hefty feel to it when I handled it in-store. The resident 10/22 expert, a clerk about my own age (mid-20s), said it's the model he had and he loved it. Also said it was definitely a benchrest gun, because it was weighted awkwardly for off-hand shooting.
My old coworker at one of my jobs had a Remington 597, but not the target model. He loved it front to back, and swore he'd never buy a Ruger as long as he had the Remington. One of the big advantages is the twin guide-rails the Remington has, a la their pump shotguns... some think this is superior to the grooved slots featured in other semi-auto .22s. I suspect it's also balanced better. Impossible to say without holding them both, though.
Good luck either way! Let us know what you pick.