Worth to Upgrade Older Machine

[techsforless]

Long time Mac Rumors Member Reader (lost my login). Anyways, I just wanted to get some opinions. Basically, my main computer right now is a 2011 i5 Macbook Air 13'' I got it as soon as it was released. This computer pretty much replaced my older Unibody MacBook but the only thing is I have a lot of legacy stuff on my old Macbook that I can't just ignore so I do still use this older Unibody. I've upgraded this Unibody almost to the Max, except in the HD Department. Specs Currently sitting at:

2.4 Ghz Unibody Macbook 13'' (Late 2008)
8GB Ram
500 GB HD 7200 RPM

Would it be worth it to drop down $500+ or more for a 512GB SSD to replace that 7200RPM one or is it not worth it anymore to upgrade this 3+ year old machine. I've been eyeing on completely maxing out this machine but as it grows older I'm not sure if its worth it. Thoughts? I do a lot of various tasks with the older Macbook thats why I have it as maxed out as possible. My friend is also offering to sell me one of his older 512GB SSD's from 2009 for a good price (Brand New).

Thanks for any opinions!

 

[simsaladimbamba]

If it is worth it, depends on your computational needs. What are they?

Anyway, I have a 2009 MBP and upgraded to a 120 GB SSD for the OS and use the 500 GB HDD as data storage.
Look at 4. in the following guide.

MacBook, MacBook Pro: Replacing the Hard Disk Drive, transferring data to the new HDD​

How to format a new HDD/SSD to install Mac OS X or make a bootable copy onto​

 

[vincenz]

Definitely depends on your needs. What do you need right now? I wouldn't drop 500 on an SSD though to be honest. That's almost half the cost of a new mbp. The most I'd spend is 250 tops. Anything more and you're better off just waiting until you can't stand your computer anymore and get a brand new one.