I'll see what others have to say but I have a hunch the question really is "which shoes are best for you?". The smartest thing I did was to go to a real running store, have my gait analyzed and have them recommend a few different pairs...all of which felt great actually. And I think I tried on 3 pairs from 3 different companies.
If money is tight, I still would get properly fitted but either wait for a sale or ask about "last year's models". I know where I went, the stuff that was a bit older, but just as good, was a fair bit cheaper.