Well, I've bought it!!
 
Thanks again for all the positive and friendly advice!!!

I recently bought the UAD Teletronix LA-2 collection, but the CA-2 is still my goto if for no other reason than that it doesn't boost the overall track level by 6 dB when first engaging the plug. I'm not one to obsess about sonic authenticity or non-linearity characteristics, both of which the UAD will presumably excel at. But IMO the CA-2A just works, while the UAD is a little more quirky!
 
The PC-76 I don't like that much. It seems give a harsh, clicky attack to guitars and drums no matter how the attack time is set. The UAD versions (both the 1176 collection and the legacy) don't do this!

I would agree with the CA-2A being (in my case) better than the UAD 2 LA2 (Legacy). CA-2A is my go to comp for most sources. If they only made a LA-3A PC as well

Zargg71
... If they only made a LA-3A PC as well

+1 on the LA-3A!!  ... or would that be CA-3A?!
That would be FANTASTIC if the same attention to detail was utilized as the CA-2A.
 
'Not sure about the Concrete Limiter others have mentioned - it depends on the material.
 
A while back I had it on the Master Bus during a piano (Yamaha CLP-F01 Clavinova) project and when I removed it from the bus, it was like taking a blanket off the speakers.
 
I'll drop it in to stop transients from hitting the monitor speakers during tracking, but then compare it to other limiters during the mix and pick the most transparent...
 
MG

Love the ca2a. Must have for vocal and bass. Best cakewalk plugin. Fast and easy to use. Also love the concrete limiter.

drummaman
Not sure about the Concrete Limiter others have mentioned - it depends on the material.

Definitely, it's not multiband so I would not recommend using it for complex program material. For drums it's fantastic, especially if you want to bring up natural room sound a bit. I also find it excellent with bass for a consistent sound that doesn't have compression artifacts, and for voice, trapping transients prior to the CA-2A.