Was looking for a solid, well built, inexpensive indoor bike, with a warranty longer than 1 year (frame), and this seems (so far) to fit the need. After 5 rides everything seems to be working good. The bike arrived about as well packaged as could be expected with a 40lb hunk of metal sitting in a metal frame and a total package of over 110lbs. Just attach the front/back horizontal feet, slide in the 2 seat posts, attach the seat, slide in the handlebar mount and handles, thread on the pedals, and done. I about destroyed the last indoor bike I had but after several repairs on it I think I know what to look for. The brake pad is a piece of cowhide glued and screwed onto a brake mat, and rides on the outside edge of the 40lb flywheel. Presume any similar thickness piece of cowhide will replace, or go to www.bestfitness.com. The crank is not a 1 piece, so bearings are rebuildable. Pedals look sturdier than most, maybe rebuildable (bearings don't last forever). Pedal thread is a standard 9/16 20 tpi so you can put any kind of pedal on you want. I'll probably put on 1 of my clipless pedals soon. Simple adjustment for tightening the chain once it stretches too much; same w/ replacing. Although I haven't taken it apart, I presume the bearings on the flywheel are a standard size, and should be easy to press new ones in once those fail, but the axle is a good size diameter, so shouldn't happen soon. The seat is a standard mounting 2 rail type. Seat adjustments can be finely adjusted. The pins, adjust in 1-3/16 increments. Then the seat clamp can be fine adjusted on the the horizontal seat bar, up/down & front/back. Its a bit too wide at the back for me, and has too much padding, so may switch it out sometime. So overall I think a worthy choice. No experience with the other ones more popular, but this seems to be a good buy.
After 3 months, still very happy with this bike. The pedals needed a re-lubing. Easy to take apart; bearings are not sealed, just keep track of the ball bearings and don't loose any. Replaced the seat with an old road bike seat, which also lowered it a bit and offered a better riding position.
Update after 1 yr 2 months: Had to replace the resistance pad on the flywheel. Best Fitness sent it for free. Was tired of repacking the grease on the ball bearings in the left pedal, and just bought a new pair with sealed bearings. Broke a chain a month ago. New single speed chain was easy to install. Using about 4-5 days per week, 45-55 minutes each. So far, still a good bike for the price. Official Amazon review of Best Fitness Indoor Exercise Bike. Click for additional reviews.