Which Sonar?

[Ron_Bahrain]

I am looking to purchase a forward seeking sonar for locating wrecks to use as dive sites and have narrowed the choice down to the Echo Pilot Wreck Finder or the Interphase Color Twin Scope. Can anyone offer advice that will help me finalise my selection? The sonar will be fitted to a 35ft boat for use in the Arabian Gulf. Normal water depth is only about the 20m mark. The main wrecks that we get out here are barges.

Thanks

Ron