Hey Nailz! I like mine a lot. I am getting really good flavor that is close to an RDA. That may be due in part to the trend in smaller chimneys in RTA's. Also in part to my having a setup that I normally run in an RDA. The Project X deck is very much RDA like and very easy to build on IMO.
I may be committing blasphemy but I am getting better flavor than my Prime (oooooh no, I said it didn't I). The flavor in the Prime is more muted compared to the Project X IMO. I have the same juice in the Prime as in the Project X.
To be fair in the Prime I do have a 1.2Ω 2mm ID 28g kanthal coil running between 12-17w. Whereas in the Project X I have a 0.5Ω 3mm ID 24g kanthal coil running between 22-28w currently. There is much more airflow with the X but you can bring that down to a combined 2.6mm using the single airflow holes. The Prime, as you know, has a max of 2mm airflow. So a net 0.6mm difference.
Next am going to pop in the same setup as I am running in the Prime. Specifically for a more fair and balanced comparison test.
On another note that may interest you... I recently bought an Atmizoo Tripod RTA and they really hit it out of the park with it. Qorax has one too, though I haven't checked with him yet to see how he likes it. Also did a side-by-side with the Prime, same juice and coil setups, and I get flavor notes I never knew were there in the Tripod. Flavor is big, bold and awesome. I have to say Atmizoo is my new favorite company for both RTA and RDA. I have been using their Creek RDA for some time now and it is my top RDA for flavor.
Having said all that I still have two Primes running now. I will always love my Kayfun's.
Hope that helps bud!