The DR 16 and DT7 are pretty good but limited to 7 channels. Otherwise, almost everyone who has been around the block once respects them. You can't set any fancy bells and whistles or extras - they are a basic setup but the price is right.
They are cheaper if you order from China but not all that much.
There are some pretty good options if you want to go to an expandable tx/rx, control more than one model, set things like throttle curves, mix outputs using switches (e.g. a 'slow gimbal' setting and a 'normal' one) etc. Taranis, Spectrum, and others have good compatibility and a good following - but you probably won't beat the price of the DJI stuff. And, of course, my favorite for multi-rotors is Futaba. However, Futaba isn't as good for me in the RC plane area. I will probably move to Spectrum in the future (lots of reasons - mostly to do with that area and not multi-rotors).
One option that kinda escaped me for a while was the Devention 7 (Devo 7) which can be had for about $100 or less. The range is probably not as good as the DJI but the tx has a lot of features you can play with. I finally broke open the manual on mine and found a wealth of cool stuff. However, like the Futaba and others, the learning curve to control them the way you want is somewhat steep at first... and it is still just seven channels.
What is it you want to do? Putting a vanilla DJI on a 450 or something might not make the best sense since you probably want at least one more channel - but everyone has their own priorities.