My choice is the Houston bag. It has a fun summer look to it.
Besides, I think the Suhali is pretty but not for the ocassion you want to use it for. I don't why but I feel the time has passed with the MC collection.
I say Houston and Alma or for more relax summer bags The suhali in blue is beautiful but the look is a little more formal so it really depends on what looks are you looking for.
In my opinion the suhali in blue is not formal at all. I think it would look great with a t shirt in jeans, but i do seehow i won't be able to wear it with a summer dress. hmm decisions decisions.