Which Photoshop CS2 version should I buy?

I am a professional photographer who is just now purchasing Adobe Photoshop. I am very familiar using all of the different versions, but I do not know which one to buy. On Amazon.com there are two different versions of Adobe Photoshop CS2. The first one is entitled

"Adobe Photoshop CS2 [OLD VERSION] by Adobe (CD-ROM - April 28, 2005) (Windows 2000 / XP)"

the second one that you see when you scroll down is entitled,

"Adobe Photoshop CS2 for Windows by Adobe"

The second one is much more expensive. What is the difference between the two?

Which Photoshop CS2 version should I buy?free adware remover

CS2 has been discontinued. It will not read today's RAW files from current cameras (well, newer ones anyway). You have to convert them into DNG (Adobe Digital Negative) files before CS2 reads them.

Best to get the CS3 version. (CS stands for "Creative Suite"). It is really version 9 (for CS2) and version 10 (for CS3).

If you take a lot of photos--Adobe Lightroom is more appropriate. Photoshop is for major, fine editing, but Lightroom is for global editing (for example, correcting white balance in one hundred files at once).