Learned to play on an Alvarez 5-stringer, bought 3 more (Yamaha, Schecter, & Peavey) sold two of them (the Alvarez and the Schecter), bought a 4-stringer (SBMM) out of necessity for a few songs, bought another 4-stringer (Jackson), and then exclusively played 4-stringers for a while, and am now back to playing 5-stringers exclusively. Currently wishing for a multi-scale 5-stringer like a Dingwall (expensive) or an Ibanez (cheaper).