I was hesitant to purchase an "all purpose lens" preferring generally to carry primes or, at least, the 28-70 G and 80-200 G. However, I recently bought the 18-250 to travel light and I've been pleasantly surprised by the results. The results are quite good (shooting on the A700) and it covers a lot of ground. Definitely worth considering. The Tamron is also a quality lens, but the two are fairly close in price and the Sony does have a tighter/quicker focus turn. Nice looking lens too, and well built.