Ally my bikes (well both of them) use Shimano XT so my wheels are all micro spline freehubs. Just bought a new bike with SRAM GX, didn't really want GX, but it comes with the bike. Do I
A). Just run a XT cassette with the GX derailleur (cheapest option) B). Buy new freehubs for all my wheels (pricy option) C) Upgrade new bike to XT (less costly than buying loads of freehubs, less cost in long run, but a faff with internal routing)