Old cars I'd take either one. Have had good experiences with all my H series Holdens and my 351 powered XE.

Newer cars though I'd get the Fords over the Holdens any day like Byron said. I like the motor in the V8 Holdens but not very impressed with the rest. The Ford 6's are a much nicer vehicle to drive as an everyday family car. (although in reality I'd skip them both and drive a Toyota as a true daily)

V2 Monaro is still on the future shopping list though.