I only wear ASICS. The fit is perfect. They last ages, and dont spend £££ on celebs so you tend to get better value. still can be pricey but...
Do you know your running style? some are neutral (yay, that's me) some supinate and some pronate. Either get your feet checked on a pressure pad or check worn shoes or use this
Finding your foot type - YouTube!
what distances are you doing? speed? also can you afford to alternate?
From this choose strutured or cushioned. If you are heavy for a runner choose stability whatever.
Asics gel nimbus are terrific as are trabuco trail shoes. I wasnt keen on kayano (very exp too) and I have the precursor to the 3030 which are a great workhorse shoe and have women's versions in all these. asics website is helpful too.
I get last yrs colours off ebay and save a fortune...
I wear them at home for a weekend before going out in them, never had blisters but if you are prone to them, talc your tootsies before you run and put old newspaper in your trainers to fully dry them. Friction+moisture=blister, so remove the moisture problem