We have a 1998 Vista bus.
I specifically sought one out myself. And yes I had the crap AT545 transmission.
It gets a bit of negativity for sure from the bus forums. And I think that Eastcoast is right about the ride unless you find one with Air ride like I did.
I have a 7 window shorty, and I use the lift to tote a full sized motorcycle in the rear
I knew the AT545 was crap, and so I made sure to do a lot of research, and I have bought an additional IH bus with the same chassis and motor (its a long bus) and I swapped the transmissions..
It is a nice bus, the flat floor and the location of the lift were some of the key selling points for us. We tow a sailboat, so the pug nose is ideal for boat launches.
but a 1995 will likely not have the connections for an A-2000 that my later 1998 does. You can still do it, its both difficult and not, but it is do-able.
I have the entire PDF of the Thomas Vista body wiring now, so anyone with a vista wants it let me know. I talked the guy at Thomas into sending it to me
good luck in your bus hunt