Certainly with the Avgas prices in Europe, the twin is less ahead financially. But still ahead. In the example at the start of the thread, the $350K you saved buying it, would account for more than 4000hrs of flying before the single wins out calculating about £2/litre. Still a substantial difference.
Here's another financial reality: What if you have to finance the $500K you buy the new single for, vs, being able to buy outright the older twin? You can probably have the twin for the down payment you'd spend on the new single. Then you're looking at another $300K in interest alone, assuming 5% interest over 15 years. All of a sudden the figures become even worse.
Last edited by AdamFrisch; 25th Aug 2013 at 22:08.