I've used a Suunto watch with HR strap for 3 years and have gone through 5 straps. I use the strap 4 time/week and they tend to last 6 months before the signal gets weak. The actual fabric holds-up OK, but the signal just seems to wane...once replaced all goes back to normal. Other users have had issue with the plastic connectors breaking but I have not had that issue.
Pros: Easy to Use
Cons: Durability
This review was written in the old system and had content requirements that are different than reviews written today.