[quote name='Scotticus' timestamp='1363983176' post='2020639']
Cheers chaps, all of those replies helped heaps.
Chris-B - yup I've played the TH500 a couple times. Nice head for sure, but it didn't do anything for me that the Shuttle couldn't match other than provide more onboard distortion, but tbh not the sort of distortion I generally go for.
Loz196 - I like your thinking, but the Fusion also adds quite a bit of size/weight along with those valves. I didn't dare tempt myself by trying it because my rig has to stay small for now.
Delberthot - thanks man, good to hear from someone who's used both. Sounds like we've been attracted by the same things.
To cut a long (4 hour) story short, I ended up buying the MB500 this afternoon. I physically couldn't leave the shop without it lol. Luckily it still sounds awesome at home. Only gripe I've found so far is that the boost circuit is included when you switch the DI out between pre/post EQ, but I can live with that.
Thanks again people... off to list a Shuttle for sale.
Scott
[/quote]
The GK MBFusion is the same size as the MB500