how much money did you guy invewst for a rig mining
$4200 for a 6 GPU RX570 and RX580 rig. (I bought Titanium rated PSU's vs. the G2)
$1100 for an A3 (includes a power cord and cat6 cable)
The price difference and ROI timeline is very different. The A3 is riskier and way louder than the l3+. If these ASIC's die or whatever their depreciative value is way lower than the GPU rig. I can sell everything on it and still make a profit if I had to today.
That is one benefit of a GPU rig I have found. Re-sellability. Kind of like buying a toyota vs. something else. I could sell a toyota tacoma with over 150,000 miles and still get a higher ROI than say a Ford F150.
So if you do get into mining I'd do two things.
Make a decision tree analysis and figure out your best case and worst case scenario down to difficulty rate and price.
Estimate your rig cost for a bare minimum setup. If you want a 6 GPU or 12 GPU capability, figure out how much your rig would cost to build with 2 GPU's and then shoot for that. Get that up and going....You won't be making a lot. Just a dollar or 2 a day after electricity...but it will be running. Then be patient and hunt for GPU deals...on craigslist, on ebay, on facebook, on new egg, etc. Buy them individually and just add them in.
Or just buy an ASIC and forget about it. Know your ROI will be about 12 months with that. Unless you get an A3, but know they can be bricked by a fork. Or an L3+ but know you will be getting about .3-.4 LTC by december if there are no other major difficulty increases (and keep an eye on a potential 1GHz LTC miner coming out about june or july.
Anyway. It's risky. Do your due diligence. Take a week and gather data, run scenarios and allocate percentages. So when the price drops you can just hang on or cut your loss.
J