I'm thinking of getting a new computer, since I am running maya from a 2year old ibook g4. It pisses me off that my computer is neither capable of using mental ray or the hardware renderer, because my graphics card is toooo shite, -and it's really slow.
So my question is, what would be a good machine to buy. Apple brought out this new quad processor g5 and you can put in some incredibly expensive graphics card. However it seems a bit too costy.
Would it be a good idea to go for something decent that lasts for some years?
Is it propably better to go for a PC? Where are the advantages/disadvantages mac vs. pc regarding the use of maya and considering the cost?
What would be a reasonable graphic card to get?

tell me what you think
thanx