Saying recon engines are not worth it because the BBC says all breakers are rip-off artists is a bit of a sweeping statement. There are plenty of honest breakers who'll sell the original engine as it came out of the car, and many specialists (some of them on here) who'll do reconditioned parts for pretty reasonable prices.
+1 - what hassle and aggro - if there's a warranty? Also its not just cost of parts but also the time taken to source and fit said parts - that reflects £2k worth quite easily IMO