OK, so i bought my powerbook (sig) from john lewis just under a year ago. I have a little applecare left and of course, a whole year of the free john lewis extended warantee left on my mac. So how good is the extended warentee? should i stick with it (will be giving my pb away after the summer, but don't want the machine to break on whoever gets it), or buy applecare? as a side note, can you buy build to order models at john lewis?