I have the OEM Dueler H/L 400 tires on my 2008 non-hybrid Highlander, and I am very happy with them. I've read the poor reviews too regarding mileage, as well as many postings to TN, and IMO those accounts are due to poor tire maintenance, poor driving habits, or both. I have 31,000 on my Duelers right now (30% highway miles and 70% city) and I'm estimating a minimum of 45,000 miles and possibly approaching 50,000 before the wear indicators show. I agree about the low rolling resistance of these tires, which has likely helped me achieve 28 MPG highway (at 65 MPH) with the gas-powered version. If the performance characteristics and/or the price of the Duelers is equal to or better than other tires you're considering, then I wouldn't shy away from buying them again.