I hope your experience has been better than ours. Our carpenters purchased Hayfield double hung replacement windows and being unfamiliar with them I tried searching online for information. Didn't find much and they looked okay so we allowed them to be installed. Every single one leaks. We had snow coming through one of them. The warranty is useless because Hayfield won't back it up.
I haven't had any experience with Hayfield, but I have just bought a house and am looking into replacement windows...a couple of places have been recommended to me. I have also researching online...so many options!