I read through your profile and honestly, I am finding it hard to recommend something!
I usually don't have that problem.
Two things come to mind; since you like Guerlain's Vetiver and ultimately find the Guerlain more interesting that the Creed, why not check out another Guerlain? Coriolan is my suggestion, especially considering the Texas heat and it's only gonna get warmer for a while. Coriolan can still be found for an excellent price even though it's discontinued. It'll give you some body and hold your interest while still being light enough and non-cloying for the heat.
Secondly, I will mention Cacharel Pour Homme. Another that will hold your interest yet be tolerable in the heat with a proper application.
Both of these are different enough from what you mention above and from each other and neither are aquatics of which you already seem to have enough of IMO. (I'm not a big fan of them).
I'll refrain from further description on the recommended scents because I think you should sample them first and decide for yourself and also because the reviews in the directory are far better than what I could accomplish.