Audio Technica AT33EV different versions? On RP6?


I was thinking of trying a low output MC on my new rega RP6. The Audio Technica AT33EV looks like a potentially good one that will not break the bank.

Does anyone know if there are different versions out or NOS being sold between these multiple price points:

Amazon - $351
http://www.amazon.com/Audio-Technica-AT33EV-Moving-Cartridge/dp/B001J2KGDY

J&R - $500
http://www.jr.com/audiotechnica/pe/AT_AT33EV/#productTabDetails (some good reviews here)

Needle Doctor - $589
http://www.needledoctor.com/Audio-Technica-Cartridge-AT33EV?sc=2&category=363

Should I check for serial numbers, production dates or something else?

Has anyone tried this cartridge on rega arms, specifically the RP6 arm / table? Do people consider it a excellent, good or poor match? I've been told rega arms like high compliance carts and the AT33EV seems to be in the middle of that range. I would be using it with my Jasmine LP 2.0 mkII phono preamp. It looks like it comes with a nice protective stylus guart like the 95E or my current cart, the Ortofon MC-3 turbo.

Looking forward to see what people have to say about this combo. TIA.
sbrownnw
If you could spend a little more, I've had this model and loved it:

http://www.audiocubes2.com/product_info.php/cPath/31/products_id/605

I think it's worth the extra dollars over the regular version.
@mofi, what table / arm did you put it on? What phono stage are you using and what are your music prefs?

Again, TIA...
Scott...I had it on a fully blown/modded Rega P25/RB600, (upgraded subplatter, platter, outboard power supply, counterweight, etc.)

I used it through the phono stage in my Modwright LS100 preamp.

My music preferences are: female vocalists, Steely Dan, Eagles, Fleetwood Mac, etc.
@mofi, thanks! I might order an AT33PTG/II directly from Japan.

Anyone have good experiences with Japanese ebay sellers for this cart?