I'm using turnbuckles on my 1:32 and 1:48 build. Recently using exclusively 1:48 Gaspatch ones as they are the most realisticly looking ones and relatively easy to work with. I have also their 1:32 turnbuckles, but using them only where the original a/c had bigger ones, like for example on the cabane strut of Fokker Eindecker series.
In the past I have used selfmade ones from 0,5mm brass tubing (too time consuming for my very precious modelling time), then Radu Brinzan's PE ones (hard to work with and 2D) and now the Gaspatch bucles. Their only downfall is the price, but with my rate of 2 models per year, I can actually afford it.
Regarding the rigging material itself, in the past I have used monofilament exclusively, but I found out, that sometimes it gets overtightened and can cause "banana disease" to the struts. So now I use it only to add structural strenght where I think it is needed. For example, the upper front lines of Fokker Eindecker in order to keep the right dihedral and to prevent wing sagging. Then I moved to EZ line, but I don't like it as it is too soft and threading it through a tiny hole or tube is very hard, way way harder than the mono, so I actually ened using bigger diameter tubing for EZ line, simply because of that. Another con of it is that it gets damaged from superglue, yes it got glued, but it happens that it got malformed or even melted if you put a bit more. Now I use modelcasten rigging line, which is stretchable, but not as much as EZ line and noticeably sturdier (not sure if that is the right word). Way easier to work with than EZ lien and round, while the EZ line is not round (this is not noticeable when pulled). It also comes in two diameters, which is very usefull as not all the lines in an a/c were the same diameter.
Best regards,
Sasho