Hi Ruben,
I bought the original Bay Trail dual boot Vi10 a year ago, and I just got the Vi10 Ultimate 64Gb on sale. I used the original Vi10 for entertainment, web browsing and recently started bringing it at work for some light development (Java programming with IntelliJ editor) and connecting to remote servers, since I got fed up with carrying a huge 15″ laptop with a ridiculous autonomy!
I bought the Ultimate to use at work, hoping that the Cherry Trail and bigger ROM would make it a light mobile work PC. I’ve tested it for the past 2-3 days, and definitely the chipset upgrade makes the tab a lot zippier. 2Gb of RAM is OK if you don’t plan to multitask a lot. My only gripe with the Ultimate is that there is a driver issue that makes reading microSD bigger than 32Gb impossible. Currently trying to get my hands on updated drivers.