Tim, I bought my K1 when the two band modules were the only option, then bought a 4 band module as soon as it came out. I've never regretted it. My pick was 40/30/20/15 because I like contests- otherwise I might have gone for 40/30/20/17. I just took the K1 on a 5 day backpack trip in New Mexico's Gila Wilderness. I operated in the ARS Spartan Sprint the last evening of the trip. 73 Bruce N7CEE