Hello Talkbass! After going through different rig setups, I have had my eye on these specific amps. Any advice on these particular amps? First, for perspective, I usually play in mid-to-large size venues. I've never used larger than a 2x12 cabinet but would love to scale up to at least 4x10 or even 6x10. I've fallen in love with these amps due to their massive clarity and low end sound. Mesa TT-800 Ampeg SVT Ampeg V4B Mesa Walkabout All opinions would be greatly appreciated.