Ahh something here I can state with some authority! haha! Back when I worked at Line 6, just when Helix was just getting off the ground, one of the side perks of my gig there was I was tasked with keeping the amp collection maintained and to buy amps for future modeling. I had played everyone of those amps, side by side to the then HD Pro. Some of those amps with such a wide variance of tone, really captured the flavor of key settings and some were spot on to what everyone liked in a specific amp. That said the Mail Order Twin (referenced above) was one of my fave acquisitions... This Silvertone Twin Twelve amp lived in the owners bedroom for 40+ years as the original owner. And he had 2 of these! I have to say that this is probably one of my top 5 faves on the Helix! The Bassman thru a 4x12 Marshall cab is one of my other faves. The Bassman from the POD HD to current is pretty much a bone stock period correct tweed Bassman. The Bassman before that had a few mods but still sounded killer. There's a lot of other great stuff never modeled yet, I'm looking forward to seeing it make it's way into the Helix!