Redtop if you have a large wad of money hanging around
Ecotek if you would rather some newer technology, not as much balls-out power but still as much tuning potential.
2.0 8v if you're skint
Basically, at all the scrappers around here when a 16v Redtop Vaux comes in the engine comes straight out ready to be sold to some spotty kid with a student loan and a rusty Corsa.
With the Ecotek models (late Cav's and Vectras mostly) there's not so much demand for the engines so you're more likely to find a decent one for normal price. I never realised they were almost as tunable as the redtops.
Ecotek if you would rather some newer technology, not as much balls-out power but still as much tuning potential.
2.0 8v if you're skint
Basically, at all the scrappers around here when a 16v Redtop Vaux comes in the engine comes straight out ready to be sold to some spotty kid with a student loan and a rusty Corsa.
With the Ecotek models (late Cav's and Vectras mostly) there's not so much demand for the engines so you're more likely to find a decent one for normal price. I never realised they were almost as tunable as the redtops.