I've had a few dynavap editions, 2019, 20, 20m, omni' ,21m Azurium ect ect ......
I've currently kept my Shomni (obviously) and an Azurium 2021m. I might offload the 2021m and get something new but similar.
I've worked it down to two options I like at the moment.
Revolve Gen2 stem with Dynavap...