I have the device now for about 6 weeks and work out 2-3 times a week. Essentially, I agree with previous reviews. In building there were a few minor difficulties: The mounting of the rails on the flywheel is no rubber / plastic hammer hardly possible. A grease (grease supplied) of the nozzle helps a bit, the thing to ease. Also for housing the cable in the "handlebar" you have to bring some patience. So far there is nothing to complain about at the function. The operation is quite simple and intuitive, although I have not tested all functions. The calorie values indicated seem to agree reasonably (if I compare with my previous training in gyms). The pulse measurement both on the grip electrodes and using the supplied pulse belt works well. The display itself is no longer appropriate, but does the job. The preset programs can be adapted with regard to the pedaling resistance, which I personally find very good in operation. The price is in my view in order, which I consider the original price 1,290 too high (I got it for 829.00). However, similar devices in the sports departments of large department stores, although often not as robust as the CX 5.1, usually not cheaper. If something changes the impression I'll adjust my review.
Supplement 01.21.2015 I use the device now for about 1 year and it still works just as on the first day. The purchase was worth it.