[quote name='shizznit' timestamp='1325673220' post='1485821']
I am very much a solid state fan. Main reasons...
1. Reliability
2. Portability
3. Price
Reliability - When a tube goes it's always when you least want it to. 9/10 in the last 5mins of a soundcheck or second song into the set!
Portability - Have you ever picked up an Ampeg SVT-2 head and carried it up a flight of stairs? Try that and then do the same with a Markbass LMIII.
Price - The D-class market is very good value for money and the quality of the products out there is getting better and better every year. Companies like Genz Benz and Markbass are developing very nice D-class/Tube hybrid amps that sound great.
[/quote]
Fair comments, but why wouldn't you carry a spare tube? we all go out with spare leads/straps/picks etc.., even if most of the time it's for the amnesiac guitarist to scav off us.
Portability is where the trad. valve heads fall down. Mine is close to a two-roadie-job, the SVT2 quoted weighing not far off 5stone (or so I'm told).
Even taking this into account the decision should really be made by your ears, so despite the weight, price, maintenance etc... issues, I'd still have [i] at least[/i] one valve in my rig - that way you can tweak the overall sound of the amp to your own specs by swapping out tubes for different ones, especially in the first couple of preamp tubes.
Ultimately it's all down to taste. Yes, the world would be better if we all drove small, efficient, easy to maintain eco-cars, but occasionally we all need a bit of 'Mustang'...