Well done, it sounds good!
Next logical move if you want to go that direction is to get a 2nd mic and make the move to stereo sound.
A few years back I went through a phase where I tested about 40 different mics over the course of many weeks, including the ones that Paul has.
I played with the bottom of the barrel $20 condenser mics (takes a LOT of work to make them sound OK, but they are great for the spoken voice), a matched pair of the Neewer NW-410's which at the time were $99 and sound surprisingly good, far better than their price indicates and would be for me, the ultimate budget solution for musicians.
For my condenser mics, I finally decided on a matched pair of the sE Electronics sE4400a. For my ears they were simply the best sounding mics for the accordion... they didn't add or remove anything, just recorded the accordion exactly as I was hearing it live, and they were a bit more receptive to adding EQ than the AKG C214 (which added a harshness that I did not hear on the 4400's), but we are truly talking nit picking levels here. In my very non-scientific tests, they even out performed a set of $5000 mics that I tested, which really surprised me (Neumann KM 86's)... am super happy with them.