i've got an asus m3np notebook with a 1.6ghz centrino processor, 1gb of ram, and a 80gb 5200 rpm hd. and as an added feature you can use two batteries. the website quotes '10.5 hours' total battery time, but that could only be possible with a 10.5 hour notepad.exe session

realworld time is about 5-7 hours which is AMAZING for the amount of power the machine produces. i mention this in this thread because i had a budget of $1500 and was set on a little ibook, but the price of upgrading and the obvious power difference steered me towards a centrino laptop. I have noticed tho, I tend to only use audio in my final compositions. although with the addition of lives operator, i'm considering purchasing live as an all in one solution to turn my notebook into a portable funbox.
however.. every other week it seems i ask myself if i made the right move buying this PC notebook instead of a mac notebook. i have zero stability problems.. im not big on a ton of vsts.. only use reaktor really (probably explains the zero stability issues

) and i am extremely satisfied with this notebook, build quality, performance and all.. but it always feels like im missing something. like i should of went with the mac even tho it clearly performs lower than my current machine. I have the demo of live and it runs like a dream on my machine, with operator and everything.. not to start a debate, but outside of the GUI/community related with macs, what advantages does it have over my PC notebook, and more specifically, what justifies the ~$600 price difference?
I have used macs at work doing multimedia & i'm in love with the interface, however due to $$ and impatience PC always seems like the 'first' choice and macs seem like the 'justified' choice. please, someone with experience on both platforms using their notebooks on a day to day basis as their primary computer/DAW tell me thier view point on this. I would consider a powerbook, but to get it up to spec (fast hard drive and 1gb of ram) I might as well buy two pc notebooks.
P.S. i feel the need to state that i absolutely love using macs and this isn't a mac vs. pc style post. but when it comes to stuff for the studio im saving up for WEEKS to buy, price:performance is a HUGE factor.