The first thing you have to ask yourself is, what are you planning on doing with it?
If you're installing the OS on it then you'll need to make that the bootable drive. Unfortunately, this'd then mean you'll need to install all of your programs again as well as the OS.
If you can't be arsed installing the OS again then it's perfectly reasonable to use the HDD for the OS and programs. You could then store all of your files on the SSD. It's up to you.
Apart from suggesting what you could do with such an arrangement, I won't be much help to you with regards to choosing an actual drive. Take a look at some of the reviews on hard drives on the Internet and go from there really.
well its mainly gonna be used for boot and some apps and games
I got a Agility 3. Have had it for about a year. If you buy one, make sure to update the firmware first thing before installing anything on it. I got multiple bluescreens and had to update the firmware with Windows still on the SSD which was a tad hard.
What I do just to be helpful.
I have my operating system, photoshop, sony vegas etc.. all the essential programs on the SSD.
Then just keep games/movies/music on my HDD, you can still access and run them while your using your SSD. Will be the same loading times as previous if it's on your HDD though if you don't mind that then go for it.
The reduction in loading times make an SSD well worth it.
I keep most games on my SSD. It's almost full since the dumbasses at Steam won't let you have some games on your SSD and some on your HDD.
It's gold when playing BF3 though
So nice to have the maps load quick. I'm kinda doing the opposite to Hexta, I have both PS and Sony Vegas on the HDD since they load pretty quick.
in the end i bought the cruical m225 of the wightbay for 60
hopefully i can still play the games on my hhd without formatting or losing data
Tom could acctually have that kind of function built into the motherboard, just remembered that I have it myself.