For limiting I find Concrete limiter is highly transparent...not sure why you find the opposite.
 
If it isn't to your taste then I second Voxengo Elephant.

AT
Voxengo Elephant.

++

The Slate FG-X is made especially for transparency and can make audio masters extremely loud in volume with no ill effects. 

Plugin Alliance,,,  DSM V2 Dynamic Spectrum Mapper is amazing once you learn how to use it correctly.
It blows multiband limiters away . I been putting one of these on my drum,bass,guit,voc Subs and my recordings are way punchier. Try the Demo but watch the video tutorial before trying it . Otherwise you will hate it at first

Razorwit
The T-Racks Brickwall Limiter is probably also worth a look. Great inexpensive plugin.
 
Dean

I was going to suggest this one.

scook
Might also want to look at A.O.M. Invisible Limiter
 

I have heard many good news on this plug......
+1 for Voxengo Elephant too

bandso
The Slate FG-X is made especially for transparency and can make audio masters extremely loud in volume with no ill effects. 

+1

Concrete limiter is good. My favorite is LimiterNo.6. It's free, but don't hold that against it. It's 64 bit, and I also own Pro-L.
http://vladgsound.wordpress.com/plugins/limiter6/

limiter6 ++, and also toneboosters barricade's another goodie :)

lawp
limiter6 ++, and also toneboosters barricade's another goodie :)

+1 for TB Barricade!