We bought our daughter a suzuki LT80 new back in '02, no problems with it. Added the front wheel extenders and headlight kit. I was gonna look into a polaris 90 but everyone local was out of the 90s and only had 50s. Also turns out the 50/90s are imports from taiwan, not actually made by polaris. I think one company makes many of the little quads with different plastic.
Looked at the honda 90 but it was for a more advanced rider was 4 stroke but a 3 spd transmission, not auto.
Yamaha, auto, shaft drive, 4 stroke but the suspension is poor. Solid front monobeam, really stiff rear shock. Even the new raptors have the old front axle.
Suzuki, makes there own along with yamaha and honda. Auto clutch/trans, 2 troke(

) electric start. Has a very good track record for their 80 from ATV magazine reports.
Guy at work bought a polaris 90 same time I did. Second rear swing arm broke in half on it. Polaris knows of a problem because the first one they gave to him and said it was updated. Second one looked identical and broke in the same spot, tubing was slightly thicker but no improvement on any gussets or welds.
I ride a '03 LTZ400, wife '98 Warrior, son '87 TRX 250X.