I picked up a Trek Navigator hybrid a couple of years ago. My only complaint has been the wide low-pressure tires and the drive train. I replaced the tires with skinnier 80-lb tires that has worked out nicely, but the drive train is still an issue.
The LBS where I bought it couldn't quite get the derailleurs adjusted to a) run quietly/smoothly or b) keep the chain from slipping off a cog so as to lose motive power entirely. My solution was to have the shop adjust the front derailleur to only use the two larger chain rings, as I seldom used the smallest of the three, so I'm now riding a 14-speed instead of a 21-speed bike.
It's my assumption (based on nothing objective) that cheaper bikes (I think this bike went for about $425 or so) cut corners on the components, so I'm wondering if I couldn't spring for a better set of drive train components that I might be happier with. The current gear ratio is also a little low, causing me to "run out of gears" occasionally when running downhill.
I was kinda looking at the Shimano Alfine 11-speed hub, but the reviews seem to be sufficiently mixed that I'm not that enthusiastic about dropping that kind of cash on something that may not be reliable or perform significantly better than something more conventional.
I'm pretty much a warm-weather, paved surface rider, and like to go moderately long distances - never less than 12 miles, and I really like rides of 20 miles and up (hope to get a metric century under my belt this year).
Open to suggestions on what options I should consider.