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
lwien123 Reviewed by lwien123 on . Just a little rant I got the extreme yesterday and I love it as I said in a previous post that I was deciding between this and the purple days I know they are different animals but the things that I liked about the PD was that it is durable as hell so if I leave it and my kid knocks it over it isnt over for the unit and the ease of use no whips or balloons (I love both of these features)but it is cumbersome a dowell with a straw makes alot of sense. It is alot less to deal with. My extreme might be up for sale. Rating: 5