DS, check out these 3...
http://www.classikstudioreverb.com/Main.html?prod-CSR
http://www.artsacoustic.com/Content/...s-details1.htm
http://www.m-audio.com/products/en_u...rbW5-main.html
All native and all pretty cool.
The first one by IK is supposidly modled on a lex pcm91 (or is it the 480, i forget) obviously it doesnt sound EXACTLY like one, but from what I have heard it does a good job (you can download a demo if you have a syncrosoft key which I assume you do as you use sx3.)
The second is also not bad. It takes a bit of tweaking to get some decent verbs but it can produce some very nice results.
The wizoo is a convo, one of the better ones Ive heard. It also has some nice modulations which are very lexi like, not to bad on the cpu either!
Aside from those the only other option is a powercore with vss3/dvr2 or classic verb. All VERY nice sounding verbs. Plate on the UAD is not to bad either but I would choose the poco verbs over it everytime.
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