Hello Rollinsdan,
It's a tough call. I used to have the 1100gs and now have a Dakar. I certainly miss the power and the handling of the 1100 but had to be honest with myself about what riding I'm doing at the moment, which is commuting through London every day and on days off taking a nice ride out somewhere. The dakar is great in town and on longer trips I usually plan it so that I'm not on motorways or dual carrages. I think for a trip down to Morocco you'd appreciate the 1100gs more than the Dakar. That's not to say the Dakar won't do it, it would but you'd have to allow more time, more stops etc.