I do have a lot of small sirens!
I've had a few big ones over the years such as a Thunderbolt 1003, STH-10, M5, P15 and a screamer, but now the biggest one I have now is my Model 3, and it's the only one I currently have that runs on 3 phase. The smaller ones are much easier to store and can operate on single-phase power most of the time. The only other ones I'm looking for now are and Erick siren and a Secomak GP3.