I had an LC50 MkI for yonks, but I eventually killed it (A combination of general wear and tear and a moderatley stupid combination of pedals...Two RATs, maxed, a 50 db homemade preamp and a boss eq, maxed). Before I did that though, it was possessed of a pretty goddamn meaty rhythm tone, and not bad lead sounds with a bit of boost. They are a touch noisy though, unless you have really good valves.
If you were going for one, I'd go second hand, wap a decent speaker i there (mine was running an EVM 12-L) and stick a decent graphic eq in the loop. Good tubes would be of benefit, maybe even a re-bias to use el-34's if it's a Mk-I. All in all, a very nice amp.