another tradeoff of the 2.6 vs the 2.3-16 is that the 2.6 has a higher rotational mass than the 2.3-16, which, coupled with its widely-spaced ratios (5spd manual), makes for less sporty shifting than the 2.3-16 (lower rotational mass and close-ratio gearing).

i'm a fan of the inline-6 though. You know that because of its inherent balance, the engine components are not subjected to undue stresses at any rpm. This knowledge, coupled with the smooth sound it makes, is very confidence-inspiring.

of course, the 2.3-16 makes more sporting sounds ...

the ultimate for me would be a manual C36 ...