course computer if I go Raymarine which is sized for a much bigger boat but needed to drive my L&S (NKE) hydraulic ram. The ram has gobs of power for my boat and a very good reputation for durability. Raymarine says that I can run the Seatalk ST60's and the ST70 to the AP at the same time which would be ideal. I have read a lot of negative comments about Raymarine but my own experience has been good. You are right in that it is widely available and probably more than adequate for my needs. Thanks!