I'm looking to get a porsche 911 cab, I'm having second thoughts about the water cooled engine, and thinking about getting the last model year of air cooled, they must be perfected by now. Get the best of the last year, hopefully bulleproof and no lingering problems. Now what model would be considered the best of the best, considering, ease of maintenance, and not alot of known problems? Not looking for a turbo, I want soethong strong and sinple yet a great example of the marque. Thanks for any info.