when I had a similar issue with a modern no brand taiwan columbus airplane frame I went to my old school lbs and brought the frame. he whipped out a catalogue and we spent 5 minutes determining which to go for and ordered it in. cost me 15 euros max, fits and was a pleasant experience flicking through a greasy catalogue with a greasy man in greasy overalls
when I had a similar issue with a modern no brand taiwan columbus airplane frame I went to my old school lbs and brought the frame. he whipped out a catalogue and we spent 5 minutes determining which to go for and ordered it in. cost me 15 euros max, fits and was a pleasant experience flicking through a greasy catalogue with a greasy man in greasy overalls