With its terrific power boost, the Swytch Go+ breathed new life into my 10-year-old, large-frame bike, making longer trail rides possible again for this aging rider (68). Although not my usual cruising speed, it effortlessly achieves 20 mph and it "flattens" uphill grades, which is helpful here in western Pennsylvania. I got the best-price/longer-wait deal, with the Swytch kit targeted to arrive in September. Disappointingly it didn't surface until October so limited my ability to assemble and get in more than a couple of rides this year. Instructions weren't perfect, but along with online videos, were clear enough to reduce guesswork and figure it out. Harness has a couple of unneeded connectors, adding some clutter to the assembly. Were it not for those few nicks, I'd have given it a 5. Very happy for the bike refresh and highly recommend Swytch to anyone who loves their existing bike and is considering going electric.