Marshall DSL20 - How Good Is Marshalls Budget Valve Amp?

Marshall have been kind enough to lend me a few amps to review, I thought a good idea would be to review all of their 20-watt amps. I was completely blown away with their fantastic sc20, sv20, and silver jubilee Studio Series, so I thought I would have a look at their far eastern made DSL20 Head. The Studio Rats are core band members Paul Drew on guitar/production/mixing, drummer James Ivey and Dan Hawkins on bass. They collaborate with singers and musicians to produce radio-ready songs.