gemmoglockI'd go with the B100 for SQ, but go with these if you are after comfort/portability. These are such a good price for $30 you couldn't go wrong getting both and using one as backup. Although, I would absolutely recommend AGAINST purchasing the B150. Directly compared them to the B100 and I am scratching my head as to why they are at a higher price point. It's a sidestep if anything, but it honestly just sounds like an EQ'd B100 to be slightly warmer, but sounds more smothered in the process. After years of using the PL50 as my daily, I now use the B100 with PL50 as backup.