Well, it's up to you dude. Laney will be a laney, marshall is a marshall. Both are
brit sounding though. Only advantage I see in getting a marshall mg15dfx is the effects.
Kung pareho price, I'd go with the laney lg35r over an MG15(CDR or DFX). It's a 30 watt amp with a 10" speaker versus a 15 watt amp with 8" speaker. But it's totally up to you.
Go to any JB store, I'm sure payag sila i-test yung amp side by side.
It's up to you. I hope this helps.