Hi Index Hooker,
In terms of your first problem, it just means that you need to clean your antireverse bearing. It has happened to me with Shimano, Quantum, Abu, and Daiwa esp when it's cold. Just clean the antireverse really well, and problem solved.
The other problem with your handle screw untightening has happened to me before too. I just replaced the plastic cap and it was perfect. Never had to tighten it again.
The problem with the line wrapping around your spool only happens to me when I have line with lots of memory, either old line, cold line, or bad line. Never had that problem with new line.
The problems you've listed do not require huge repairs and are common with all types of brands of spinning reels. I had a Shimano Stradic which would nick the line at the bail attachment, which is a major problem. Especially when I found out they have been dealing with this problem for years with the Biomaster prior to US release, renamed Stradic. Some ppl don't have problems with the STradic as I did, but then many others did as well. Quantum had to call back all their Kinetics and Catalysts last year bc of a major antireverse failure problem. So in comparison, cleaning an antireverse bearing isn't that big of a deal.
So just make a couple adjustments and you'll be fine. Daiwa invented the spinning reel and is still at the forefront in terms of technology with their ABS long cast spools, anti-line twist technology, and Air Bails. Quantum has made a lot of headway but their production lines still need better quality control.
Just my 2 cents.