I always use my sigma 30mm f1.4. But have been trying not to touch it lately to get myself familiar with 50mm f1.4. I relied too much on the 30mm until i could not work well with 50mm.
50 mm is gd because its the closest to what our eyes see. on a ff sensor or 35mm of course.
28mm 1.4.
well, i've got a 50 1.4, thats lovely. ive never tried a 35mm pov but i guess at 1.4, it would be just as fun!