ML320,
You will like the Reflex.
If the old shocks were worn out, it will be hard to get an idea of how much better the Reflex is, since any new shock will feel much better than a worn one.
But they are very good.
Do you know what the OE shock is? Boge? Bilstein? other?

Richard,
I went to our aftermarket engineering facility for the first time Wednesday (I work on the OE side). I was very impressed with the operation. I work on the hot end, so mufflers are not my field of expertise, but I can say that Walker does not cut corners anywhere, in materials, design, or mfg. As for comparison to the competition, I can only say that I have installed a non-Walker muffler (before I worked there) on my wife's Oldsmobile, which was, well, less than long-lived (about 2 years, 20k miles, which is bad even in salty Michigan).
I was most impressed with the DynoMax products. One guy who works there has a pretty awesome F250 Super Duty Power Stroke with Rancho suspension (another Tenneco brand), very large chrome-tipped DynoMax exhaust, and a performance chip plus other horsepower stuff. I didn't see or hear it run, but it sure looked good and fast. They said he lights up all four wheels very nicely, if you're into that kind of stuff.
Thrush (classic hot rod glass-pack stuff) and DNX (Fast & Furious small car type stuff) are the other brands.
They had a Ford Focus there that they were getting ready for the SEMA show. It had Recaro seats, DNX exhaust and a supercharger (rotary compressor), plus a bunch of other go-fast hdwe. They said it was making 190+ bhp without the NOS system turned on.

__________________
Now you're suckin' Diesel!

'88 300SEL
'92 300D 2.5 Turbo
'96 Lincoln Town Car. The Jazzmobile.