Picking the brains of anyone who owns either of the above.....
I've seen many reviews - the 17-70 in the main gets excellent write-ups, however opinions on the 18-50 EX vary. Some say the latter isn't as good, others say it's absolutely wonderful.
The 17-70 costs more, despite not being an EX, and of course has an HSM and OS. I'm assuming that the EX is cheaper because of a lack of these features? In which case, does the EX deliver superior image quality?
The range on the 17-70 is more useful but I'll take whichever produces the best images. Unfortunately reviews of the 18-50 are so varied that I cannot at the moment make an informed judgement.
Also, anyone with any other recommendations? I have looked at Canon's EF17-85 IS but ruled it out due to quite a few mediocre reviews (a couple of which compared it directly to the 17-70).
[Edited 2010-06-27 03:31:21]