i would sell you my Subway Rocket if we could work out a deal for shipping. I have never shipped an amp before, but I know how to ship an amp, so it's just a matter of how much it costs and getting the boxes and packing materials.
The Subway Rocket is loud as fucking fuck. it's definitely not an apartment amp, which is why i don't use it anymore. but it sounds amazing at house, practice, and club levels. it does not like distortion pedals, but loves boost pedals. so your LPB-1 works wonders either out front or in the loop. your tubescreamer, not so much. the Subway Rocket has a serious amount of gain on tap. it loves humbuckers, kinda marginalizes single coils, and makes everything sound decidedly MESA. but if that's the sound you want, it's a great fucking sound that responds really well to volume and tone knobs.
If I was in the market for a new Mesa, i'd get the Express 5:50. it's the culmination of all the amps since the DC series (which my Subway Rocket was also based on) and they've done a great job with them. The Transatlantic seems almost too simple and I'd want the control features on the Express' second channel.