yes the technical choices can be overwhelming
so i suggest you work from a purpose position, meaning what kind/type of Music
do you wish to play, to focus on, to get good at, and it might be easier
to then define an accordion that suits and will enhance/support that need
the more you can define this the better
of course, one can also say any wonderful accordion will take you in new directions
you had not yet imagined
but without a mentor you can rely upon and who could spend time
helping you navigate the used market, i understand you may only be able
to afford one at this time, so that one must be a good and careful choice
as you will have to live with it for some time, and the selection of reed-sets
and the tuning thereof is many and varied and confusing
much advise will be based on what other people like, it can be difficult
to get people to "hear" you and keep your position in mind when they
make recommendations
having said all that, there are still many used full size accordions in the USA
with the most popular choice of LMMH reedsets and tuned mildly for general purpose.
Most are standard quality reeds, most have 9 shifts, no tone chamber,
and 7 shifts on the bass side. In the $1000 price range generally when they are sold
by the current owner who inherited it.
The brand name, at this level and price, does not matter very much..
the condition is everything
Many of these are still in nice condition and without tone chamber
in your area, there was only one (possibly) decent used box listed,
Black Pancordion Crucianelli Piano Accordion, Tuning was converted to LMMM 40 120. LMMM. Looks a little rough but still plays well. Microphones. Comes with new gig bag. If it's still listed it's...
lawrence.craigslist.org
at a low price for the features, that i could find, but it has been up for 2 months
so it could be gone by now. it is LMMM so will likely be a strong musette
more for ethnic music
good luck