The Antminer is an ASIC. I also have a 5x GPU mining setup. I like both. ASIC can only mine the one algo, but GPUs can mine lots of algo's. ASIC is WAY more profitable, but it really depends on your budget. Since I don't have much of a budget, but going, seemingly, half and half between ASIC and GPU is working out good. Dual mine ETH + DCR on GPU, and sell hashpower to NiceHash / ProHashing for ASIC seems to be doing me good. Build up some ETH (which is always good) and get some extra BTC scratch. :)
If you have a older GPU, prob wont be able to do anything in regards to ETH, but maybe mine some SmartCash. Network is low hashrate right now. I have a cheapy old GPU laying around on SmartCash and getting about 10 a day. Thats how ETH started. People could mine MULTIPLE ETH a day. Even when I started, my one GPU could mine a whole ETH in 30 days. Now its half an ETH in 2 months for all 5 working together. Difficulty has blown up THAT much. INSANE.
RE: My first ASIC mining experience so far...