Running out of space!!!

HI All

I am looking for a little help please :stupid:

I already have a 500 GB Samsung HD502IJ Spinpoint F1 that I have almost filled.
I have split this into two drives (C:100gig) & (D:368gig)
I am now looking for something BIGGER to hold all my extra information.
I have read good reviews on the 1TB Samsung HD103UJ Spinpoint F1.

So the questions are:-

1. Is this the one to go for?
2. Are there better TB out there?
3. What is the optimum split for C & D drives to give me the quickest windows time possible.

1. Either the Samsung F1 or the WD Cavier Blue for 1TB drives IMO.

2. Seagate have recently released a 1.5TB drive which looks decent enough.

3. Splitting a disk into two doesn't really offer any performance increases other then trying to ensure that windows is loaded onto the edge of a disk platter. Splitting it over 2 drives, I would put Windows and any applications on one drive and the swap file plus temp folder on the other drive. To be honest, I've never benchmarked (nor seen benchmarks) comparing a system that has been split up in this manor though.