OS 9.1 Compatibiliy with PT5.1

I've been using Digi 001 on a G4 400 with OS 9.0.4 for nearly a year. At first I had OS 9.0.2 and had lots of finder crashes. I have fewer finder crashes since I upgraded but every so often something weird still happens, though I never have problems with audio software. I also recently upgraded to Titanium Toast 5 and seemed to increase finder crashes again. I'm thinking of upgrading to OS 9.1 (I'm now running PT 5.1 LE and planning to upgrade to 5.1.1 soon), but I wondered if that OS is anymore (or less) stable than 9.0.4. Has anyone had any particularly good or bad experiences with 9.1. Frankly I wish I could still use 8.6. That was a stable OS. So that's my fear of upgrading in a nutshell.

I upgraded from 8.6 to 9.1, and I agree, 8.6 was tough to leave behind (and completely unnecessary for Digi not to support...). I'm not especially pleased with 9.1, I had to dump pretty much all my UI conveniences like Dragthing etc. I hear 9.0.4 is more stable, but still gotta stay pretty trim.

I'm using OS9.1 with PTLE 5.1.1 on a G4/667. Works fine.