I swapped my old, big Nardi steering wheel for a 300mm OMP one today. Feels the perfect size when driving at speed so should be good for track days (although not the best when parking).
Because the wheel is a fair bit smaller than OEM I find that the I can't see the top of the rev/speed dials now. No big deal though as the needle comes back into view when I get to 6k rpm so I'll just have to set that as my new minimum revs when driving!
Will post photo tomorrow.