I currently run a profile on my mod and a tensile on my stock. I have used the profile for around 3 years and have never had a problem, no skips or anything and it has had plently of abuse! It is also very easy to work on and reasemble. As for the tensile, its currently been on the stock for around 8 months. It has had the occasional skip not often though. still an excellent freewheel, Anyway i would recomend the profile if funds will let you, however if not the tensile will still do the job well