I would look for the low end of a higher end range, the good frame with components that could be swapped up as they break.
For the best value buying a whole bike, I always look at sales from the large retailers, so it is not always a case of settling on a particular bike, more a case of deciding what to pay and trying to get the best bike for the money.
Paul's Cycles have been a good place previously, I notice they have one or two tasty deals right now.
I am guessing this is for someone else who has asked, and not your immediate friends or family, hence you won't be putting them together a high spec bike for the money?