I'd say it comes down to the TT800/PF50. You get most of the D800 in the TT plus more. For me between those two I'd probably want the PF50 for home and maybe recording use and the TT for gigs, but it seems you don't actually need a low power amp for that, so I'd probably look to shift that one.
On the other hand, if cash is king and you can't see yourself requiring any more power than the PF50, then the MB's will bring in more cash a lot faster - you'll always be able to grab another eventually should it be required.
On the other hand, if cash is king and you can't see yourself requiring any more power than the PF50, then the MB's will bring in more cash a lot faster - you'll always be able to grab another eventually should it be required.