Warning: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in ..../includes/class_bbcode.php on line 2958 Versatile - tube amp combos
The Tweaker is great, but looking at the wattages of Jim's existing amps, I'd point him toward the Rebel 30 2x12 (much more versatile than the Reb 20 or Tweaker) or even the Renegade 18/65 watt 2x12 combo (they have several other combo's).
That said, The Express 5:50 and the Alchemist are both incredible amps, and are easily among the best I've ever played. You can't go wrong with either, but the only issue you might have with the Mesa is the lack of a super jazz clean. That was the only short coming I could find.
Guitar: Gibson SG Standard Natural Burst, Squier CV 50's Tele, Hell Guitars No. 2, Squier CV 50's Strat, Reverend Club King 290, Taylor 522e 12-Fret mahogany,
Squier Vintage Modified Jaguar Bass Short Scale
Amp: Fender Super Champ X2 Head, Egnater Tweaker 15, Fender Mustang I, Acoustic B20 1x12 bass amp
Pedal: Budda Budwah wah, Wampler Ego Compressor, Electro-Harmonix Soul Food, Voodoo Lab Sparkle Drive, Wampler Velvet Fuzz, Seven Sisters Eve Tremolo, TC Electronics Gravy Tri Chorus & Vibrato, Catalinbread Echorec, TC Electronic Alter Ego 2 Delay, Hardwire Supernatural Ambient Verb, MXR Carbon Copy, Catalinbread RAH, Big Muff Pi with Tone Wicker, BYOC Mouse 2.0 Distortion, BYOC Boost/OD-2