Having just installed the TeamTech 6 points last weekend I have to say that it wasn't a picnic and it took a lot of time. Of course I'm one of those anal compulsive guys that wants everything to be perfect. If you follow the instructions in the "how to" section of this board you will end up taking the seats out and putting them back in a few times, which is a pain if you want to keep the sharp edges of the rails from scratching the interior. Putting the interior back together was not as easy as taking it out. Trying to get all of the screw holes lined up was a pain. I now have all of the straps adjusted so that the central locking mehanism hangs down in front of the seat and out of the way when not in use. It is also possible to pull the shoulder and waist straps back behind the seats and out of view when not in use.
They look great but are not very comfortable - especially the shoulder straps. The padding is quite firm and rubs on the sides of your neck, especially with your arms forward in the normal driving position. A soft padding there would be a real plus. Also, be sure to close you door at least part way before strapping in - otherwise you can't reach the handle to pull it shut.
One more thing: I used the template from the "how to" section to cut the holes in the rear panels. They need to be larger than that. I could not get the hooks through the narrow slits. Rather than trying to cut the holes bigger I removed the hooks, threaded the straps throught the slits and then re-attached the hooks. Not a hard job but time consuming and unexpected.
If anyone has any questions give me a shout.
Bob K