Monster Beginners

Hi people, I’m looking for a monster, because I can finally drive unlimited. my neighbor bought a monster 900s and so I was convinced by the thunder of the 2 cylinder 😉 I looked around for guzzi in the meantime, but found the monsters more appealing! however I have read quite often and also heard from other drivers that the duc ́s are quite vulnerable. I certainly have no left hands but how does it look with the susceptibility? reasonable w artung is clear! can you tell me the differences between the 750 and the 900s? I saw both with 75 ps!? the 600s doesn’t really come into question for me because the 54 ps seem a little weak…. does someone from you have one on offer? mfg