My son is an high school tenor/alto/soprano sax player and has been getting local solo and duet gigs in coffee houses for audiences up to 50 people. He currently uses the school's guitar amp and I need to buy him one of his own. Leaning toward the Roland BA-330 or the Bose S1 Pro. Any advice on a portable PA that would last him for years? Not sure if it matters, but he is using a Shure Beta 98/H/C mic. Thanks!