If what you are looking for is ease of use, durability, stealthiness and most of all, efficiency, than you are not making a mistake by going with the PD, especially if you plan on using it as a personal vape and not a party vape.

BTW, I don't know if you've seen this video, but check it out. It's a PD being hit through a bong. Reason that I'm posting this up is just to show you the kind of efficiency it has. The user got 3 hits and all of those huge vapor clouds off of one bowl that will hold only 0.025g !!!

YouTube - 100ml PD hits