As a 001 user, should I bother to upgrade to 6.4?

[Greenshoe]

I haven't visited this forum in ages as I haven't been recording for more than a year (still playing and writing, but not recording).

Anyhow, since then, I've migrated everything to OS10.3.9 except for Pro Tools LE which is on OS9.2.2.

I've done some searching here already and it seems that since my G4 isn't a dual processor (G4 AGP w/ 1.4 GHz Gigadesigns card upgrade), I don't really get much improvements (if any) in track count or performance by moving up to 6.4 (and I know that I will have to downgrade to 10.3.8).

Am I missing something here? Is there any reason why I should upgrade to 6.4 as a 001 user? In the past year and a bit away from plugins, gear talk, etc. I've become kind of a "bare bones" kind of person with new material I've written (and with life for that matter) and I'm planning on trying this new philosophy to my recording (i.e. acoustic guitar + vocals, with very sparse backing tracks if any). I realized in hindsight that my best tracks production wise were the most sparse tracks with essentially one or two instruments and vocals so I'm going to stick with that from now on rather than trying to become a super-duper engineer at the same time.

I guess I'm planning on remaining on 5.3 (or whatever the last OS9 version, I can't even remember now!) until my G4 sputters out but just wanted to hear from other 001 users out there who made the switch and whether there are any real benefits that I don't know about now that the initial "new car smell" feeling has now worn off with the migration towards PT 6.x.

Any input appreciated. Thanks and happy recording!