BMW, Triumph, Ducati, MV Agusta and Ural are awesome bikes. They speak for you when you have your helmet on. Let's talk first about sidecars. Ural motorcycles are best known for their sidecars. In fact, every bike comes with a sidecar. Some are even 2 wheel drive. Sidecars are a blast to ride! The thing about sidecars is, you can remember right now the last time you saw one. Sidecars stand out, based on the old BMW boxer motor, the Ural sidecar uses an air cooled opposing twin motor to power the 750cc machine down the road. This stand out feature on the boxer motor, combined with that little sidecar seat hanging on to the side give it a unique profile on the roadway, at an intersection, or riding down a winding country road. The first time i saw a sidecar rig, it was at a stop light, and the pilot was taking his 2 dogs to the vet. By the next stoplight, I had pulled up next to him, and commented on his sidecar rig. lo and behold, it was no him; he was a she, and such a sweet little old lady with her dogs in the sidecar. But you see, had she been piloting any other machine, I would have forgotten all about her and her little dogs too.
MV Agusta is simply motorcycle art. Beautiful motorcycles in every aspect, beautiful to see, ride, and to race down the track on. MV's come out of Italy, like the Ducatis, but they are not as well known. Much like Lamborghini is to Ferrari, MV Agusta sets itself apart from the rest of the field by doing lower volume, but is much more sought after. Please, don't put a sidecar on your MV Agusta. I have seen a MV Agusta sidecar once, not in person mind you, but you can see just about any sidecar on the internet. LOL! Google it, you'll see.
BMW Motorcycles truly speak for themselves, and you probably know all too well about Triumph and Ducati motorcycles. So, i'll close with this: don't knock it 'til you try it, sidecars aren't for everyone, but you may find out, they're a load of fun.