Sampletekk tubed keys and tubed Wurli - use both of these a lot
Nigel
 

The Band19
Some excellent input here, but no concensus.

I don't think there is a bad suggestion in there. We all have our favourites and that will be a personal thing. For a sampled piano, I prefer something clean an then add my own effects and amp simulators, but the SampleTekk tubed stuff does sound very good.
There is a demo of Lounge Lizard, so its easy to evaluate this one for your self. https://www.applied-acoustics.com/loungelizard/trial/ - Being modeled its not a huge download.
 
I mentioned VKFX, you can get a demo here http://www.overloud.com/products/VKFX.php.  I love this effects plug in when used with electric pianos, it really brings out the Dim Pro and Kontakt factory library e-pianos.
 

yorolpal
+1 to lounge lizard. Neo Soul Keys is also nice.

I've been very happy with Lounge Lizard since v1. 
Have been very cpu friendly.
 
And also Neo Soul keys sounds fantastic I think 
(see this for the sound of it)

I have used Lounge Lizard and the EP in Addictive Keys. I have to say I use Addictive Keys more since I got it. A worthy mention has to go out to a couple of old freebies I used religiously for years. These would be Mr. Ray 73 and Mr. Ray 22! Mr. Ray 73 used with an auto panner completely NAILS the Max Middleton piano sound on Jeff Beck's BLOW BY BLOW album! Mr. Ray 22 has the built in effects. Sorry, to say that they are discontinued as far as development. They are only 32 bit. They also are donation ware so you get a nag screen for a few seconds unless you make a donation. They are well worth looking into. I will get the link for you in just a second.

http://www.genuinesoundware.com/    
Here is the link. There is also a very good Wurlitzer ep plugin named Mr. Tramp. The legacy freebies are at the bottom of the page. They all come in one zip file. There is also a not bad freebie of a B3, Organized Trio. I have used those plugs for years before I got to a point I could afford the pro stuff. At least give them a try. There is no malware or anything attached to them. I have run them safe for years.

http://www.youtube.com/watch?v=GSf-dJyzCVE

It will be hard not to get pumped after watching the above demo for Neo Soul Keys, combined with the VKFX - the VKFX is even available as a custom Sonar offering for the ProChannel in the Cakewalk store.

Just to hear cool keys played it's worth watching the demo. But the narrator is certainly not bland.

lots of good input here, thank you all. I ended up going with https://www.pianoteq.com/
 
and their rock pianos. 
 
https://www.pianoteq.com/listen_by_instrument?type=electric
 

The Band19
lots of good input here, thank you all. I ended up going with https://www.pianoteq.com/
 
and their rock pianos. 
 
https://www.pianoteq.com/listen_by_instrument?type=electric
 
 

 Right! I always seem to forget about my Pianoteq Vst for some reason.
 
I ought to start using it - especially since I paid over $100 for the damn thing some 2 years ago. 

I'm jealous! I've tinkered with the demo and forced myself to restrain myself.

Glyn Barnes
I like NI's Scarbee Classic Keys. (Rhodes, Wurlli, Clav and Pianette) Also Hollow Sun's RMI and CP70.
 
However what ever you use it will be greatly enhanced by Overloud's VKFX.

Thanks for the reminder. I have this and have yet to try it. It's now on my short list.