Since I started with bikes in the very late 1960s I've had some from about 15 or so different brands:
Suzuki, Yamaha, Kawasaki, Honda, Hodaka
Moto Guzzi, Ducati, Motobi
Bultaco, Maico
Greeves, Matchless, BSA, Triumph, Norton, Rickman, CCM/Armstrong/CanAm
There have been both 2T and 4T bikes. I would probably have had more marques if there had been more money/storage space to accommodate them.
I started off MXing, then added trials, then road racing (with one "let's not do this again" dirttrack on a banked 3/8 mile oval).
There are a lot of different cool/weird motorcycles out there. I've been to the Mostra Scambio at Imola and if I'd had the money I could have easily filled up several containers with interesting odd-ball bikes.
On the other hand, I know people who don't seem to have any interest in having anything that isn't from their favorite marque, and some of them don't want anything but one specific model/family of bikes within that marque.
I must admit that there are times when I find myself wishing that I was one of those types of people.
Say for instance I couldn't be bothered with anything but a Bultaco. I could have a Metralla/TSS for vintage RR, a Sherpa T for vintage trials, a Pursang for VMX (and PVMX too), an Astro for dirt track (if I could bring myself to try it again) and a Matador or Frontera for vinduro. I wouldn't need a minimum of 15 different sets of special tools and manuals (probably more if I had a mix of models within a given marque) and I'd probably be able to stock a small assortment of bearings and gaskets that would fit most everything.
There are other marques that would encompass a multitude of areas of the sport e.g. Ossa (Pioneer, Plonker,TT/DMR, Phantom, Wildfire), BSA (Goldies or unit singles in scrambles/trials/RR, dirt track or street trim) etc etc. So many of the old bikes were sufficiently generalist in nature that you could convert them to most any of the different areas of the sport.
In what camp do the rest of you fall, or are you in the middle with 2-3 favorites?
cheers,
Michael