I bought my printer in January of 2016, so I have had it 2 full years now. It was my first printer, and I don't suggest going into a delta on your first try, but this is how I roll.
I assembled it easy enough in a couple of days, only an hour or two each night, it was not so frustrating, just tedious. The frame is super sturdy, and it all worked well once i configured everything. Calibration was a bit of a nightmare, but this is a delta issue, not because of Folgertech. (also, i tend to rush through stuff sometimes and missed a couple important steps initially that cost me alot of time.)
This printer prints amazing at incredible speeds compared to my friends with standard cartesian printers. I have upgraded many parts since i bought, but nothing because I had to, but because i wanted to. I have had one bearing go bad and had to be replaced in 2 years.
I highly suggest you check out Folgertech before you make your purchase, their FT-5 printer looks amazing and will be my next purchase. Their online support is great and the community surrounding it is very helpful