My personal preference here is for Mushkin (I have the Enhanced Chronos in my gaming rig) but from what I have read Intel, Mushkin, OCZ, and Samsung are all good choices - I have not read any reviews of Corsair SSD's yet but I would imagine they would also be a good choice
Just curious, with a 1TB HDD, why such a large SSD? I would think you could cut the size in half (and the price by more) - just wondering...
EDIT: Of the three in the OP, I'd go for the Samsung 840.
Get the Samsung 830 series 256 GB. I have two computers running them for the OS. Excellent, with proven reliabilty. The new 840 is likely also great, but not proven yet and costs more. The difference in performance will not be noticable.
I have an intel 520 series ssd, and i can tell you for certain it does not disappoint. Almost nothing beats intels quality, most of their ssds comes with a 5 year manufactures warranty and they are one of the most reliable ssds on the market. I ended up buying another ssd because i was so happy with the quality and performance it provided. Also the intels read/ write has a faster mBps than the others youve listed.
Edit: The samsung ssd matches the intels in terms of performance.