Don't forget that the Vecturo is a rebranded Supercut, not a MultiMaster. Unfortunately it's a rebranded version of the last model, not the latest, so it doesn't have the Starlock blade mounting. I was kind of miffed when the Starlock system came out within a few months of buying the Vecturo, and I might have gone for the Fein if I had been in the market a bit later. I bought an adaptor for it, so I can use the blades, but I feel bad when the other kids show off how fast they can change blades while I'm still messing with the adaptor.
But, let me tell you how I ended up with the Vecturo. It might help you make your own decision if I share my thought processes.
One of the things I do for a living is hardwood floor repair. I bought the MultiMaster a few years ago for that purpose (as well as for all-around use, of course). I found it was a bit underpowered the for the kind of work I do. It could do the job, but it the motor got alarmingly hot, as did the blades sometimes. So, my choice was to slow down, which wasn't appealing since I spend more than enough time on my knees cutting 100-year old oak as it is. So, for the sake of my knees and my beer-drinking time I decided to get the Supercut. At that point there really wasn't any other choice. The Supercut is in a class by itself. Festool came out with the Vecturo while I was mulling over which package to buy. In the end I went for the Vecturo over the Supercut because (1) it came in a bigger Systainer, which would give me more room for accessories. (2) It has a Plug-It cord, which is a real time-saver for me. The Festool plunge accessory was also very appealing. It looked like it would make my job easier, and it has. So, I decided to go for the set version rather than the basic. Now, the plunge base fits on the Supercut, but you obviously don't get the bundle price. So, adding up the savings on the accessories and larger Systainer, the Vecturo actually worked out to be a bit less expensive.
So, I guess it boils down to do you need the extra power and the accessories? Is a Systainer important to you? Is the Plug-It cord important to you?
Oh, and another point. Both the MultiMaster and the Supercut/Vecturo have sanding accessories with dust extraction available. I know that sounds like heresy in present company, but it has pulled my bacon out of the fire a couple of times when I didn't think to bring any of my Festool sanders to a job. The triangular sanding pads make great detail sanders and you can also cut them into narrow shapes for getting into tight places. Assuming that Fein makes sanding attachments available with StarLock you'll obviously be able to use them on the Bosch, too. I don't know about dust extraction for the Bosch.