Husaberg for sure, they won a heap of world titles in MX and Enduro against the big factories [I think Berg employed about 25 people], they only made a couple of thousand bikes a year and they set the std for the modern 4 stroke revolution [like it or not]. The FC501 motor has to be the best 4 stroke engine going......pull from any gear at any speed and can scare the shit out of you, even now if you put a top rider on one he will be up there. It's interesting that CCM's have a sort of cult following and pull big dollars but never really won much, on the other hand, the Berg's where always expensive but won shitloads.....the modern CCM maybe in collectability and value?. Any of the euro bikes from the mid 90's on will be sought after...TM, VOR, Vertimati, Husqvarna 410/610, they all came with trick parts std.