i guess this thread may not need another opinion, but i'll give mine anyway ;) ;)
i think other pickups /could/ be better than a bkp. i will not buy any new non-scatterwound pickups anymore at least.
the handwinding process does give that extra bit of complexity and life to the sound, and i think its very noticeable when recording.
so yes, i'm convinced about handwinding and using the best materials. now i think other pickup manufacturers could be as good at doing what bkp does. but in practise, the service that tim offers (old fashioned customer service, with specialist expertise, lots of research, genuine love of electric guitars) and his range of products makes them more effective as company.
bkps are more expensive than some handwinders, and cheaper than others. i dont know what a fair price is considering the materials and labour, but in the market place for boutique pickups bkp is in the middle.
regarding non-handwound pickups (seymour duncan, dimarzio)... with experimentation, i think its possible to get quality balanced tones which fit to the situation. that may mean going through a few sets though unless you get lucky. with bkps suggested by tim, i got the tone i wanted straightaway... when i've tried to experiment on my own i got it wrong though ;)
even the cheapest, £5 on ebay nastiest chinese made pickup will actually make a noise. so in that respect bkps are actually really bad value ;)
different price points, different performance
edit (some more):
i brought pickups from two other handwinders.... quality items every one of them. but even if they were suggested by the experts of that company, they weren't exactly what i wanted tonewise. tim's experience, research, and i guess his skill at understanding what his customers are asking for does mean if you listen to him you have every chance of getting it right first time.
i will probably try other companies again as experiments (and why not?), but i'll always come back to bkp.