Etronix also do an "advanced" transmitter, same price range as Core one.
http://demonpowerproducts.co.uk/prod...oducts_id=5384
I think both products look very similar, and if they are compatible as RoyBoy says, they are probably made to the same design, if not by the same people!
And as you say, getting the advanced controller for the extra adjustments is a great choice - once you get your head around the options, there's a lot of "driver aids" in there...