hmm let me see
Well I've had many many jap droad/dirt bikes and all have been good. Currently on a GS 1150A and I ride it hard. Do the odd enduro, like to pop wheelies and generally flog it.
Did a clutch ( self inflicted ) and a drive shaft ( wheelies ) other than that no issues. Like all kit if you look after it with good oil, general maintence and all that they should all server the rider well for many years. Got a mate who just rides his bike ( Jap ) and has lots of issues, dosent wash it ( best way to find faults before the let you down ) nor fettle it in any way, then is pi55ed when it breaks down.
I say any bike is a good bet appart from those cheap chink copies ( still yet to prove worth ) but at £700 odd for a new one who would care!!
I can rate the GS but and would never sell it, unless I really managed to bollocks it up. Still even then would fix it.
I also have a ducati 748, lots say whoa!! stay away from them but never had any faults with it. ( Currenly pending insurance write off as was run over at this years TT by blind lady driver )
What ever floats ya boat.