the PT Cruiser is a whole different beast from the Neon... it's more-or-less a "compact wagon" of sorts, with semi-retro style.
The Neon's that had the most problems were 1st. gen. revision 1 ('95-'97) that had the 420A? engine... the SOHC 2.0L, specifically with the 3-spd auto. My mom has one that's not even got 61K miles on it & it was rebuilt when she had to have the head gasket replaced, at 55K miles. She's on the 4th transmission since she owned the car... and she got it with 47K on it nearly 4 years ago.
Ironically, manul transmission neons have like 1/3rd the problems of auto transmissions. DC/Mitsu auto trannies are teh suck.
ON-TOPIC- The belts & such got replaced on my '95 at 93K miles when the previous owner took it in for the 90K service. Runs like a charm...