But I'm sure you won't regret it if you DO make a pledge. Not so sure about O3, I would expect it to cost around the same as O2.
I use O2 as my main browser on the Iyonix, but it occasionally freezes the machine, and some sites don't work. To overcome to this I resort to firing up ARM Linux and run Mozilla which works well, if rather slowly.
Oh yes, and my ability to do that is thanks to Peter too!