Honestly, I’d still doubt they’re genuine until you test them against a legit set of Sennheiser’s. I could have sworn I warned you against buying Sennheiser on EBAY - on your earbud search thread.
Regardless, don’t feel bad about enjoying the earbuds, because chances are they’re still bogus - though they sound good. There have been similar good reviews online (including headfi.org) - which were subsequently proven counterfeit. The counterfeiters are getting better at their trade.