Sorry guys but all posts say "get os3.9, its better" but other than getting multiview to show jpegs and gifs by clicking on them, no-one says why its better, and what features you can't live with that are in OS3.9.
Personally I think the ONLY thing you can't live without is large hard disc support, if you have a hard disk bigger than 4.3 gig.
I have 3.1,3.5 and 3.9. I HATE the reset on cold boot that happens with OS 3.5 and 3.9, i can get multiview to show jpegs band gifs in 3.1, and the 3.5/3.9 icon scheme is nice but only if you have a graphics card otherwise its too slow.
IMHO if you use the native displays and have hard disk less than 4.3 g then just install OS3.1 with MagicWB, MagicMenu, Toolmanger for a dock or two, toolsdaemon, clicktofront commodity, diropus4, some ak datatypes, viewtek, ppshow, hippoplayer, your choice of cdplayer, mpega and you have everything you need and 5 second boot-up on an 50mhz 030