Well, i can say that most rodi units are the same. It is really the RO membrane that is doing all the work.
Honestly, to give you the best advice we need to know what your water pressure is like and who is your water supplier.
Some municpal water has chlorine, some use chloramines. The higher the water pressure the better it will work, less waste water generated.
But... if you dont want to bother with all that, the BRS units are good.