Vandy 2ce vs. 2ci


I have been interested in purchasing the 2ci for my system & found a reasonably priced pair of 2ce's. What are the differences between the two? Does Vandersteen update the older speakers to the new specs & if so would it be worth the money? I listen to rock & need nice deep tight bass, musical mids & highs with great soundstage & image. I currently have a pair of Polk RT10's, CJ PV10AL & Carver TFM-35, thanks for any help.
fishwater
What is the sonic diference? My main concern is that I may not be "as" pleased with the older as I would if I purchased a new sig.
The 2Ci does not go quite as low as the Ce, the bass difference is subtle as are the other changes. The Sig is reported to be a much improved speaker using the tweeter from the old 3a( the 3a Sig uses the same tweeter as the 5)and upgraded Xover. There is a cut off serial# for upgrading 2Ce's to Signatures. It was listed on their web site. Mine are too old to have it done or I would have by now. People I trust say to go with the Signature if you can. I have listened to the 3a Signature and is where I think I will go in the future.