Agree with Rizla....if possible, check them out in a stroe.
Anyway, as far as I know, the Marshall DSL-401/201 combos had reability issues in the past (getting friggin' hot, solder joints crapping out, blowing rectifiers if played loud etc.). Also, the claimed 40 Watts seemed way overrated. Compared, a HR Deluxe sounds rather like 80 Watts.
I used to have a Fender HotRod Deville (4 x 10", 60W) for a couple of years and it was a good amp (good clean, decent overdrive) and I never had any trouble with it. It was friggin' loud amp, too.
Maybe you check the reviews at Harmony-Central (
www.harmony-central.com).