I have to agree with Bpoletti, the MA-505 is probably the best overall match for this deck; the MkII for "standard" cartridges or the MkIII version if you want to use a high compliance cartridge. The BL-91 is a little resonant, so IMO a dynamically balanced tonearm will work better than a static arm. Also, in order to mount a VPI arm you are going to have to drill a blank mounting plate. The geometry of the deck will limit you to a 10" or (possibly) a 10.5" arm.
I have setup many MA-505s, and if you take care to match the right cartridge and take a little time to set up the arm properly these tonearms can really sing. I have had very good luck with either the Benz Ace and Glider LOMC carts with the MA-505 MkII, but there are several other cartridges that will work well with this arm.
I have setup many MA-505s, and if you take care to match the right cartridge and take a little time to set up the arm properly these tonearms can really sing. I have had very good luck with either the Benz Ace and Glider LOMC carts with the MA-505 MkII, but there are several other cartridges that will work well with this arm.