I've been looking at both the Vox Valvetronix range and the Line 6 Flexitone range..

What you suggest?

Also, what's the difference between the Valvetroix AD100VT and the XL version? Their both the same price on GAK and apart from the different colours I can't really see the difference?

XL is more geared towards metal.

If your considering a new amp, tell us your budget and current gear/playing styles and we might be able to pick you something better.
Dean Icon PZ
Line 6 Variax 700
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Dean ML 79 SilverBurst
MXR M 108
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Valve Junior (V3 Head/Cab and Combo)
VHT Special 6
Phonic 620 Power Pod PA
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Line 6 Pod HD