Hey. I'm just starting to learn the piano accordion with a 120 bass accordion my grandmother had given me. It's out of tune and very heavy. I'm sure it was very good in its prime years, but I'm looking to buy another one that would be lighter, less clunky, and easier to push and pull the bellows. I think either a 48, 60 or 72 bass accordion would be sufficient for me, but, as usual, I don't want to spend a whole lot. What would be the best piano accordion I could get for about $400? I know buying used is often the best route, but I don't have any stores near me that sells accordions and I'm hesitant to buy a used accordion online because of the uncertainty of its condition. Can anyone direct me to any brands, models, or stores that are good deals? I know that sometimes, as with other instruments, there are some models that give you a lot of bang for your buck. Thanks in advance for any help...it's greatly appreciated!

Scott