I don' t think BowTech decided to end the contract. There were circumstances surrounding the decision. The O2 strings are of very high quality. What other manufacturer has top quality strings (ones people don' t complain about)? The strings on my P40 & Pat Duallys are holding up fine. I' ve twisted them once on the Pat, & twice on the P40. The peeps are staying fine, and timing/synch are not a problem. I' m in " the area" and still using the original strings. What' s funny is no-one would care about the string ordeal (there wouldn' t be one) had BowTech never used Winners Choice in the first place.
Now to answer the original question. Winners Choice will make strings for BowTech' s bows. But you can get the Bowman or Stone Mountain for allot less. Quality is very good with any of these companies.