'Excellent shoe for long runs and ultras providing support where needed.'
Strengths: Very subjective as everyone's foot shape and gait is different, but i found this an excellent shoe that allows natural foot movement with the required support after mile 20 when my form suffers. Slight Heel-forefoot height variation allows quick weight transfer and smooth toe-off.
Used Kayanos before, which were very effective but with more miles I needed more cushioning.
Good to have an option of width sizes too.
Weaknesses: NB shoes range is confusing. they have some excellent shoes but also play in the 'cheap' shoe market as well.
Shoe size is also confusing as i needed a much larger size than my asics.
They get very heavy when wet. (But i weigh over 80kgs anyway :)
Other than that, no real troubles (for my particular feet and gait).
Overall: Moved from Nike (too soft) to Asics Kayano after multiple knee and ankle surgeries which gives me problems on one leg but none on the other. All was great until I started running marathons and ultras on roads. (I can even run barefoot for short distances as long as i keep 'form').
Needed a shoe that provides support as I tire and my form goes out the window, but cannot use motion control as it restricts my gait on the 'good'side.
I tried insoles , gait analysis and many different shoes and to date, the 1226 is the one that does the trick as it allows natural movement unlike some shoes and insoles. (I'm a physio so I've worked on all the re-balancing too)