Crisp clean tones are not Marshall territory. Choose a JCM800 Marshall if you want world class "meaty" tone.
For sparkling clean tone on a broke musician budget I would get one of these:
http://www.musiciansfriend.com/amplifie ... -combo-amp
In fact I did. I bought it used from a kid for $375, gigged with it for 5 years and it sounded great. Then I got a bad case of the wants for a Mesa Boogie. I sold the Fender in perfect condition for $450 to a jazzbo grad student. He still gigs with it. You can find good used ones all over for $400-500 now. A great amp for working musicians with sparkling Fender clean tones.