I've done the trial of the J37 and the Kramer master tape. I will pass on these. I guess I don't get it or I'm not smart enough to set these up properly, but they just seem to do nothing or make these worse, depending on the settings. I used to like the warm compression that tape would provide, but I guess I've evolved and prefer my other compressors.

Yeah, I think I'm just not using these correctly...For a subtle effect I think the new tape sim in Sonar will work. I do have other tools too. Klanghelm SDRR and Fab Filter Saturn. I'm such a plugin slut! I had to try the J37!

I don't deal with Waves anymore - not since they ripped me off - OK some years ago now but basically they sold me a product (GTR) that would not work and then they would not fix it until I purchased a WUP - not surprisingly I did not wup and have never updated my Waves products - most still work but some don't.
I see people here say they have mended their ways and are now more customer centric - well I sincerely hope they are right, but I still get the feeling that Leopards don't change their spots, so if you ABSOLUTELY have to buy some of their products, you will HAVE TO buy a Wup as well.
But if you want Tape Emulation there are any number of great products out there from reputable manufacturers, such as Slate, Uhe, Toneboosters and UAD - personally that's where I would look first
Nigel
 

  I guess they all do what they claim. I just can't decide if I like it or not. Hahaha. I have found that when mastering several songs as a group a saturation plug of some kind or other can glue the songs together nicely, but  for a simple subtle effect the Pro channel tape sim will do just fine.

<sorry - double post due to slow connection>