countersink bits

[scotswood]

Afternoon folks,
Looking to buy a good combined drill bit and countersink, maybe a set if I find a decent one. Fed up with the cheap versions where the c/s slips up the bit when drilling so any recommendations for a good quality make?
Cheers,

Graham

 

[salvage]

http://www.axminster.co.uk/product.asp?pf_id=22341&name=countersink&user_search=1&sfile=1&jump=0