Not all motorized face models have problems
just that 7998 is very prone
when my 9813 had problems, a WKH technician told me so
Moreover I was in my friends car when the 7998 couldnt open, and that was just after 2 days coming out from repair for the same problem, we were stuck with the same cd for the entire journey
So just sharing with you guys
If yours is fine thats good for you
If you wanna talk about SQ the 8061 beats the 7998 anyday
7998 to me has very similar characteristics with SH909 from JVC from what my ears tell me
7990 is of course, is in a league of its own
and it doesn't sound like an alpine, IMO