The 182 is a very nice case IMHO.... I was definitely impressed with mine. As far as the side panels are concerned, I didn't find them to be a pain in the arse at all. However, the routing is made much more difficult by the very limited amount of room that they give you behind the mobo. In this case, 1/4 to 1/2 of an inch of extra room would make everything easier. This really isn't the fault of the side panel (though you could argue that their thickness contributes to it).... it's more of a general design issue (though you can still do a super clean install if you take your time... I barely have any visible cables).
In any case, I definitely didn't have any problems with the panels themselves. I personally thought they were very easy to work with and well made. I do have some complaints about the case though... it's not perfect!