In case some of y'all might not know.....these cars are way above the "price point" that we usually talk about.
Even besides price, those aren't the kind of car that I look at anyway.
I mean, I sure as hell LOOK at them -- but they're not cars that meet my needs. :isuck:
If I "had to" take one of them (poor me)
it would be the SC430, for the reason that Sazabi said. The CLK500, like the entire MB line, has shown poor reliability in recent years. And Saz put it really well -- "headache." People often say that if you have the $$ to get a car like that, you don't have to worry about reliability because you can afford whatever it takes. But in my book, that misses the point, because it's not just the cost -- it's the headaches, the inconvenience, the uncertainty, and maybe the missed opportunities because your car won't get you where you need to go. (I know, I know, if you have that kind of $$ you can call a car service too.) 
FWIW neither of these cars is rated that great by Consumer Reports or Consumer Guide. Obviously they have a big "wow" factor, but if you get objective about them, they don't do so well. The TSX probably handles as well as either one. Is it as much fun? I guess not. But you get other perks with the TSX, including a better ride (by most people's standards). And that's even without talking about the $$ you'll save.
Anyway.....congrats, theo, for being in a position to consider these cars!
Even besides price, those aren't the kind of car that I look at anyway.
I mean, I sure as hell LOOK at them -- but they're not cars that meet my needs. :isuck:
If I "had to" take one of them (poor me)
FWIW neither of these cars is rated that great by Consumer Reports or Consumer Guide. Obviously they have a big "wow" factor, but if you get objective about them, they don't do so well. The TSX probably handles as well as either one. Is it as much fun? I guess not. But you get other perks with the TSX, including a better ride (by most people's standards). And that's even without talking about the $$ you'll save.
Anyway.....congrats, theo, for being in a position to consider these cars!