I had a Rollei and a Mamiya TLR for a while. Honestly, they never did anything for me and they sat on the shelf. Ended up going getting rid of both of them and then upgrading my Hassy and Mamiya 7 kits. For me, both of them to be a lot more versatile and user friendly than any TLR..
Honestly, it all boils down to what works best for you.