The 150cc kit has been used in the past by one of our members.
No it doesn't require a powercomander, as it will work with the stock ECU.
It is what the YZF-R15 bike uses (in india etc.).
I personally don't reckon it is worth the cost, as you probably wont notice a huge increase in performance...
If you can find one cheap, and can fit it yourself then go for it!
Otherwise I would say go for the malossi 182.
for optimum power though, you may want to consider a powercommander with it.