My personal Trio, if I were only allowed 3:
1) Ruger 10/22 to build and rebuild as pertinent for hunting, steel challenge, or pleasure plinking.
2) Vudoo, or MAYBE more preferably a RimX precision rimfire build meant for target shooting, some longer range hunting, and competition (the RimX is convertible between 22LR and 17HMR).
3) 17 WSM Savage B-mag (maybe the new stainless Ruger 77/17). Trash talk aside, my B-mag has shot very well, and the increase in power is hard to ignore. It is not competitive with a centerfire, but it stands in the gap between the other rimfires like 22LR and 17HMR and small centerfires like 204 Ruger and 223rem such it has my attention, and I’m glad to keep one around.