125 LPS gives you some options. I prefer problem free peaceful fish and my favorite fishes are not always big and showy. With a 125 LPS tank and if I had the cash, I would buy a pair of platinum ORA first grade clownfish (if price is a factor, find another coloration you like) and review posts in the anemone/clownfish forum and purchase a LPS or soft coral that will likely host a pair. I think frogspawn coral and xenia will often host clowns. If you buy xenia, place it on its own seperate rock and isolate it so it does not easy spread and take over the tank.
Other cool fish would be flame angel (may nip), copperband butterfly (stunning and graceful when fat and healthy).