I beta tested IcAROS 1.3 extensively on my AOA110 (same as AOA150 but with an 8GB SSD), and don't remember it crashing. I'm not much of a gamer, but I did run Blobwars, Doom and Quake a bit without trouble. Browsing the web wirelessly was very stable, but it can be slow for heavy sites (this has been fixed in AROS nightly builds, and Icaros can be patched).
Disclaimer: I wrote the wireless driver, so I'm probably biased ;-) But wireless is working well for a lot of AROS users now too, despite the intial releases last year being fairly unstable.