Hi J T
I agree moutain bike are heavy and slow and then tyres get a bit of speed up they sound like a land rover
A hybrid or racer thems the one to get. Getting up hills can be a little problem just think of speed coming down it
I do all my own bike repairs + servicing so much cheaper and you know you have done good job. Setting up gears is
easy when you know how. I got manuals from the library.
Many Thanks
Andrew1971