Upgrading my late 2008 Macbook to SSD- worth it?

Hello everyone,

I'm thinking of upgrading my late 2008, 2ghz aluminium Macbook 5,1 to SSD. My current 160 GB HD is full and I'm finding it a bit sluggish, particuarly when editing high resultion images.

At the moment I've got 4GB of ram (the offical maximum) and I get bootup times of a little over a minute, so not lightening fast but not terrible. Problems start when running several intensive applications at the same time. This is something I do often so speed is important.

My Macbook is now five years old, but still working perfectly running snow leapard. I have no desire to spend money on a newer model, as my current one is still going stong, but I don't want to waste money buying a £140 SSD if my machine is unlikly to last long.

What do you think? Is it worth it? How significant would the imrovment be?

Any advice much aprecated.

Many thanks

BertieTBE