Hello there,
Great amp. The Twin Reverb is as good as they come. If you only have one pedal, the Tube Screamer is a great choice.
How much you have to spend will have a big impact on what to buy. I would think a distortion pedal would be first. Boss DS-1 makes a good basic distortion pedal that is inexpensive. If you have more to spend, take a look at the Pro Rat or the MXR distortion pedal. I would get a wah pedal. I think Dunlop Crybaby is as good as any. A good chorus pedal would ne a nice additon. Boss makes a decent one. I like the old Danelectro Cool Cat chorus (the older model, it is 18 volt and larger than the new small ones). While talking about Danelectro, there are two other Danelectro pedals I really like, the Daddy O and the Fab Tone (not the newer Fab series of pedals).
http://www.youtube.com/watch?v=_qJ5x6rVmMY&feature=related
http://www.youtube.com/watch?v=ZPVXGw1P880&feature=related
http://www.youtube.com/watch?v=YxoiisPVpTA
I found all of those Danelectro pedals cheap on eBay. In fact, was dirt cheap. I paid more for the shipping than the pedal!.
Later,
Hello again,
I got thinking about other pedals you should consider.
Chorus. A chorus might add a fuller sound.
http://www.youtube.com/watch?v=I7SU6XPSvpI
http://www.youtube.com/watch?v=YxoiisPVpTA
A wah pedal would be a good addition
http://www.youtube.com/watch?v=kMqGuF8VoRo
A phaser may give you an interesting tone
http://www.youtube.com/watch?v=d8vJ1OvCqxM
I sometimes run a compressor
http://www.youtube.com/watch?v=y9ii1kUoDVw
Here is a decent fuzz pedal
http://www.youtube.com/watch?v=AZTN2gaVGjY
You can listen to those and see if any fit your style