[quote name='yorks5stringer' timestamp='1375283381' post='2159262']
Good to know but like I say, spending more on the power supply than the pedal seems a bit crazy...!
[/quote]
I'm not sure it is.
I use a Voodoo Labs Pedal Power 2. Lost of money, but fully isolated and silent.
And more to the point - would I be paying for more than £150 worth of batteries over my playing life? Definitely. At about £5 for a Duracell 9V that is only 30 batteries cost.
If you really are only going to use 1 pedal, then I'd say the Visual Sound One-Spot. That is a great bit of kit. Massive 1700mA capacity, well made and quiet.
The only pedals that it seems to have issues with are Line 6 stomp boxes. Bit noisy on them for some reason.