First off, excellent service by ProgressiveRC, you guys' rock!
Not much is needed to be said about this TX, that hasn't already been said.
This is a solid, well-built TX with excellent ergonomics! If you are a "Thumber" then, this might be the right TX for you, even if you don't run Crossfire (which you probably should anyway), you can add on the JR Lite Bay, which is pretty easy and quick, if you want to use other protocols.
For what you pay, there is no doubt this is one of the best deals.
Gimbals are HALL Effect, they are smooth and quiet, it inspires confidence, especially with the large amount of "cost effective" TXs out there. TBS made a great design. The sensors are on the mainboard of the TX, so if you ever need to swap out a gimbal from damage or upgrading to pro gimbals... you don't have to mess with a bunch of wires, it is just a few screws!
Ergonomics is just great on this, fits my hands so well, I have large hands... so typically I will go with traditional TXs. I have not tried a Mambo, but that might be next on my list, as it seems to be a mix of traditional slab and game pad style controllers.
Battery life is fantastic and this V3 board even gets you 1W of crossfire!
I like the stock stick ends, but you should look into the Crown Jewels by TBS. Cheap and fantastic!
Overall, I think TBS has done well here and I really don't think you can go wrong with this TX if you are thumber or really like game pad style.