Sony Vaio Laptop

Three years ago I bought a new laptop the Sony Vaio SZ3XWP/C, this has an Intel Core 2 Duo Processor with 2 gb of Ram and 100gb of HDD.  I selected this machine because I wanted a light portable machine that is easy to travel with but yet powerful enough to run applications like Photoshop and Premier.  Broadly I've been very happy with it, as at the time I had CS2.  But now I have CS4 and Lightroom and I have to say that its beginning to struggle.  The 100gb is a limitation and of course Vista doesn't help, and the battery life is not the best. 

So now I'm looking again and of course the Vaio is catching my eye again.  The most up to date version is the Z series which appears to have taken over from the SZ.  The spec of the VPCZ11Z9E/B looks very impressive: An Intel Core i7-620m processor, Windows 7 Professional (64-bit), NVIDIA® GeForce® GT 330M GPU + Intel® HD Graphics, LED 1920x1080 display, 6gb of DDR3 SDRAM and 256gb Quad SSD (RAID 0).  But will it run Photoshop CS4 and in particular Premier with HD video?

Anyone out there with any answers or suggestions with other light weight machines that can do the job?  Plus CS5 is due in a few months and so is USB3!  But then there's always something new just around the corner to buy.