One can read Apple iMac reviews online at various websites. One can read Apple iMac reviews online at websites such as CNET, TechRadar, and Computerworld.
You do not make the iMac, Apple does.
iMac
It is an All-In-One computer made by Apple. The computer and monitor are one piece.
One can find reviews about the iPhoto alternative Aperture from a variety of places. One can read computer magazines, read blogs on Aperature, and ask and view responses on forums.
After using a Windows computer for over six years I switched to the Apple iMac. I have been using this iMac for almost 5 years without one single problem or one single crash. I love my iMac and would never ever go back to a Windows computer.
One piece at a time.
There are several websites one can look for reviews on Apple iMac computers. These websites include Amazon, CNET Reviews and Mac World. In addition, Consumer Reports is another option as well as PC Mag.
One can see old iMac Commercials in Youtube which features the different types of commercial about old iMac such as All Mac vs. TV adds, Apple iMac vs. HP, and iMac G3 starting up.
The best solution is to take it into an Apple store and let one of the Apple Genius workers have a look at it.
Apple's iMac as well as the Compaq Presario and the Dell Inspiron lines are all considered very reliable with solid performance. They all have good reviews.
One can read TreadClimber reviews online at various websites. One can read reviews for the Bowflex TreadClimber on websites such as Amazon and Viewpoints.
Depends on which one you buy. the 21.5" iMac is 18" tall.