Welcome to the group....
There are two common suspensions, rubber torsion axles and a few with leaf springs.
If you are looking for a used rig, the torsion style have to be checked very carefully for settling, i.e. riding very low. This usually sets in at about the 10th-15th year depending on use and abuse. This isn't a fixable problem and calls for an entire new
Why don't you give us a bit more information about what you are looking for and we
can provide additional feedback.
Gotta tell you though, even here in SoCal, where there are a lot to look at, planning on buying a specific year/make/length, within a month might take a bit of luck.
You are welcome to come out to Riverside to see my Hunter Compact-II, but it is definitely to small for more than two adults unless the kids prefer tenting.
Good Luck Hunting