So my old windows laptop died the other day, not sure if anyone read my post on it or not. Doesn't really matter anyway.

I have a new IMac heading to me in about a week, this will be my first Mac computer but not first apple product (iphone 5, ipad 2) I have used them before so that's not an issue.
My issue is that I only had maybe 2 weeks playing with Lightroom 4 on my windows computer and I was wondering what people's thoughts are on aperture for Mac or should I stick to Lightroom?

the main advantage of aperture is it seems to be a little bit cheaper but other than that I'm not too aware of the differences.

Cheers for any help you can provide.