How negative are Scubapro Jetfins?

[Rynomar]

I have been thinking of switching over to paddle fins and have been reading about the options here. I am currently trying to decide between the Jetfins and the Slipstreams. My biggest concern with the Jetfins is the negative buoyancy. Does anyone know how negative they are? I currently dive wet and have my trim set pretty well. I am wondering if the Jetfins will throw off my trim and if it is easily adjustable.

Thanks in advance for the help.

Ryan