Good point. Personally, I don't advise an eBay purchase. The Mark II offers drastically more powerful routing capabilities. It's superior in my opinion. Also, the difference of Mark II versus Mark I is your Logic version, not your CD install version (which really isn't an installer). -Jer >> > I'm new to here. I'm planing to buy EXS24 on ebay. Could anybody tell me >> > what's the main difference between EXS24MK I and EXS24MKII?? >> > Can MK I version 1.0 be upgraded to MK II??? > What youre buying is the authorisation. If you have logic v5.5 or later you > will use EXS v2, and earlier, EXS v1. The auth authorises both. > > Take care however - not all EXS24 CD's can have their licence transferred to > a new owner apparently, and if you use an XSkey, you'll need to do this to > get an authorisation to put in the key. Check your local distie for details. > > ~Pev