I love my TTX-300 radios. I have 3 of them, I haven't used the SLT-3 but from what I see the version with the SLT receivers seem to have some random issues here and there but the ones with the DSM2 receivers seem to be fine, it doesn't have near as many issues as the STX2/3 did.
Bang for buck you can't go wrong with the DUMBORC X6 https://www.banggood.com/DumboRC-X6-2_4G-6CH-Transmitter-with-X6FG-Receiver-for-JJRC-Q65-MN-90-Rc-Car-Boat-Tank-Model-Parts-p-1454329.html?cur_warehouse=CN&ID=229
The cheapest I can find that radio shipped from Amazon.ca was like $110CAD. To...