To op as you i am new to the 10v and want the fastest useable o/s, win7 starter is as slow as i thought it would be given the spec of the netbook. But in comparison looking at you tube snow leopard boots at the same speed so not much choice tbh.
Another thing with the mac o/s according to the vids i have seen is that a hackintosh does 70% of what a mac o/s does? So what does it not do?
For me a slimmed down version of xp is probably the way to go using nlite, you can tweak what you want installed and it will certainly run a lot faster than win7 although not look quite as nice.