So this morning at 4 am or so my PS3 got the YLOD playing Naruto: Ultimate Ninja Storm 2.

I dont really have $300 to get the black ops bundle (cheapest bundle out, or I may go for some "holiday bundle" witha 320 GB, tho im gonna wait till E3 is over)

But what im not sure is, whats the best thermal paste to use?

Figure i'll try this instead just going out and putting money down. ($30 to fix it, vs $150-$350 that I dont really got)

I heard Artic Silver 5 or Artic Cooling MX-3 - but which is the easiest to find and best to use?