I live in the US and I've got the opportunity to get either the X100 or the C1 with the C2D. Are there going to be big differences going from U7600 -> U7700 and from nVidia 7300 Go -> 8400M G? I do pretty CPU intensive photo processing and would like to be able to do some RTS games now and then. Would the 7300 Go be able to play Command and Conquer Red Alert 3 on minimum everything? I'm leaning towards the X100 because of the overall better specs, lighter weight, and its ability to us 4GB RAM. The C1's Intel 945GM chipset doesn't seem to be able to handle 4GB RAM properly. Does anyone know anything about HDD upgradability for these two? Seems like it's difficult to reach. I really like being able to use and hold the C1 as a tablet (plus it's cheaper), but it's hard for me to get over the 4GB memory and overall lower specs issue.