[gchappel]

Unless you are going to routinely print larger than about 8x10”, a big fancy camera is not going to do a whole lot better at cloud photography than a properly used cell phone.
Post processing is a huge component of digital imaging, and will make a LOT more difference than what type of camera you use. That is a whole different skill set, and takes time to learn as well. Even cell phone images can be markedly improved with the correct post processing using programs like adobe photoshop.
If you are satisfied with cloud pictures taken through the windshield while driving down the road at 50 mph, a fancy camera is really not going to do a lot better. It will also not be as accessible.
And this is coming from a guy with a lot of gear.
It would be like buying a complete set of snap on tools because you want to change your own oil.
The right tool for the right job, but enough is as good as a feast.
Gary