Hi Kiteral,
We've jawed before.
Yeah I made the leap last summer. Sold the B8 S4 MRC stage 2 (470ps) for a new B8 RS4 - both 7-speed S-tronic. A drop in power and torque but a leap in fun and enjoyment and it's just a sheer joy to drive. As you say, you've got to try a V8 once.
Had both on track - both are awesome, but the RS4 is the real deal, particularly if you spec the bucket seats. This latter comment is one example of the difference in interior quality between an S4 and an RS4. Back on the track/road, I found the S4 more capable in the straight line than the stock RS4, but I feel that the RS4 is better on the bends and overall handling. The V8 growl on the sports exhaust is unbeatable IMHO. (You may remember my attempts in the past to get a decent sound from the S4).
Daily running costs are much the same. I tend to get 25mpg from both cars over the course of a tank. Later costs will, of course, be little more painful. But that's the nature of the beast and you go into it with your eyes open.
At the weekend we've had some bad snow up here in Central Scotland. The RS4 with its stock near-slick Potenzas was a liability. After one or two brown trouser moments, I adjusted my driving style to be several degrees more cautious than grannies in their Micras. Winter tyres now ordered[GRINNING FACE WITH SMILING EYES]
Don't think about it too much - we're only young (ahem) once
