First thing to consider is your current PC. Is it up to date? or 6 years old?. If you own a 'gaming rig' then i would sudjest the PC version... for a few simple reasons.

1. Easier to customize the UI and windows on a PC.
2. Easier/faster to hit the skills on multiple hotbars with a PC than it is with a PS.
3. Heat. Anytime you play an MMO, your going to be playing for hours most likely. Not even the best designed Console can manage heat build-up as well as a PC can. Just look at the Early X-box 360's. They were literally melting some of the internal soldering due to heat issues when they first launched, which caused all of those 'red-ring-of-death' s.
4. Pictures! print-screen is your friend to save those special moments =)
5. I 'think' the PC has a much greater options screen than the PS version. For those who dont like a whole lot of 'flashy'.. your able to turn more of 'specific' things off with the PC than with the PS.

But, thats just my 2gil =)