HDD Replacement - is there something better?

[C.A.R.]

My storage drive has given up in my desktop pc (1TB) and needs replacement.

The OS is running off the primary HDD which is a 4-year-old 500gb Western Digital item.

I was thinking of getting something newer and upgrading the primary to a 1TB drive as I run a lot more games than I originally intended to! Then using the existing 500gb HDD as a storage drive - I barely used 150gb of space on the one which has just given up the ghost.

I was talking to a mate and he said that you can get 2TB for less than £60 these days. But I wondered about performance at this price point and one thing I can't stand is waiting for file transfers and reading music from disk. I don't know a great deal about this area but the performance figures for write-read speed and cache seem better on the higher-end 1TB drives than the more budget-looking 2TB.

I've spotted this -
Western Digital 1TB Caviar Blue

And it seems pretty good, whilst being under my initial £60 budget. They do a performance model under the 'Caviar Black' label but this is exponentially more expensive still.

I want decent performance at a decent price and can't see the benefit in going up to 2TB unless it makes financial sense.

Am I missing anything? Is there a better HDD for my casual gaming / media storage PC at this price point?

Thanks in advance for any guidance.

[C.A.R.]

Currently-

1TB storage drive (broken, keeps doing file check on startup) - 150gb used
500gb primary drive - 450gb used up (have to keep deleting large files to keep it usable)

I think with the 500gb as a storage drive I'll only really need a 1TB primary so my thought process was to go for performance over capacity.

I know SSDs get mentioned on here an awful lot but I didn't know if they used conventional leads / cases or if a more modern computer / motherboard was required (also not sure what capacity I'd get - pressumably not much - at my price point).

[C.A.R.]

I've just noticed this one too which has similar specs but is from Seagate and has a 2TB capacity-

Seagate Barracuda 2TB

[C.A.R.]

LiquidKnome - that's precisely my current problem, my old motherboard isn't SATA3 - so it kind of killed this idea already. The advice received is to start over, basically

[C.A.R.]

Sorry for the late response - thanks for the advice.

So just to clarify, I can still plug an ssd into my SATA 2 motherboard, despite the ssd being labelled SATA 3? It'd be backwards compatible so to speak?