you are right it is time consuming ,But again I find Promax 7.2 also very profitable to go with as it generates 3710 Mh/s which is the highest and which is unlikely to be found in the any other miners available in the market .I think you should give a try on that one .
I am actually mining from a long period of time since I am mining on a farm with different miners they collectively give me around 1000 Mh/s but Promax 7 seems a replacement to all my miners in one machine so I find it different and very profitable and as per my knowledge i dont think so that...