I've owned bikes from Suzuki, Kawazaki, Yamaha, Honda, Triumph, BMW, KTM and Ducati. Overall reliability was equivalent for most bikes, but the Ducati and KTM were just the worst (thought Ducati has one of the best customer service, I needed it way too often). I was recently looking at the Ducati V2S, but the rational part of my brain keeps telling me to look away! hehe My 2013 Monster 1100 evo has been the most unreliable bike I've ever had. I've had more issues on that bike in under 6000km (it was new, and there was a fork seal leaking, rear brake reservoir leaking, front brakes warped, paint flaking on tank, traction control issues preventing me from going over 2000rpm on dry pavement, etc...that's more than the issues I had on all of my other bikes combined in over 350000km. They really seem to have improved their quality since, but not willing to give them another chance just yet (at least certainly not as my main bike)
My Triumph Scrambler 1200XE had a 90$ sensor fail in the first 3000km causing cruise control, gear position indicator, traction control, to malfunction and since it no longer could tell which gear it was in, I couldn't start it with the kick stand out. I've owned 4 Triumphs prior to that one, and they have all been as reliable as Japanese bikes, but unfortunately with all the electronics today, these things are bound to happen once in a while. The only thing I can think of that is worse than electronics on a bike, is electronics on an italian bike. But I admit I could be biased by my previous experiences
