I personal don't touch Reason. But I can see the use for it and why you would be recommended to use it. It 'teaches' you the old studio way of working, hooking up units with cables and placing you more on a 'hardware' way of thinking. I've recommended it to beginners before. However, I find it tedious, over complex and very difficult to break out of the way it is all 'supposed' to work. I actually started many many moons ago with Cubase (on an Atari) and I'm glad I did. Once you figure out Cubase, programs like Logic, Reaper etc are all a lot easier to learn. You see I don't think there's a 'one program fits all' kind of sequencer. You really have to learn them all to then find out your perfect way of working. Ableton has been a god send for me over the years too, as it's vey quick and easy to get ideas together. FL studio is used a lot too, but I personally hate it lol.

My recommendation therefore is to learn Cubase and Reason alongside each other. Sure, it's gonna be double the amount of work but you'll be glad you did.

Good luck with it all anyway.

:)