I see that asics don't seem to be around to build...but what about the GPU route?

or what about 5 of these?

https://bitmaintech.com/productDetail.htm?pid=00020141029135048724z39CYwEQ0684

I'm thinking about going the build route...seems like its much better if I want to expand later?

$0.14....I was just looking at this calc: https://coinplorer.com/Hardware/Simulate

doesn't seem like it can be very profitable with some of the miners listed there at 0.14....don't know if I'm running the simulation right (just let it sit on default values and ran it with achilles labs miners)

so I've been reading up on bitcoin recently and am wanting to get into mining. I understand how it works but don't quite understand the technical side of it fully. One of the first things I'm interested in is, is it better to buy a miner to to build one yourself? Lets say I had a budget of about $2k, what would be better, build on? or buy one?