Good lord !! What a choice. One that I would prefer to not have to make.
If a RINO wins the primary, which is possible, would I vote for the d’RAT instead. No, of course not. Would I vote third party...probably not.
Trouble with a third party or independent is that they would have no support inside the congress and the resulting power struggle would not lead to any meaningful reform. Not that I oppose gridlock in congress, but neither the d’RATS nor the Republicans would have any incentive to work with an independent POTUS but every incentive to work against him. The prospect of the results of such a situation frightens me.