I have a 1upusa.com trainer that I've been very happy with. I've put ~1000 indoor training miles on it since I bought it in early 2007.
It's easy to set up and can easily accommodate bikes with different wheel sizes (some of my bikes are 650C, one is 700C) and axle widths. With the exception of rear tire squeak, it's very quiet. You can use the trainer without a front wheel block, since the rear wheel is close to the ground.
Martin, the indoor trainer can be a great training tool. If you want to do intervals, you can do the exact workout you want, without having to deal with traffic, stop signs/stop lights, terrain, headwinds or crosswinds. Not only that, but you never have to worry about getting a flat tire on the trainer!
I preferred it over the gym because I could simply roll out of bed, set the bike & trainer up, do my workout, shower and head for work. It easily became a part of my morning routine.
- Melissa
I'll get back on the bike soon, I promise!