I went for 250 Gbs - same as the stock HDD I pulled.
I got that from Novatech - here in the UK.
There were some great walkthrus online about setting lion ready for the SSD. Have a look and follow them - some of the info is spurious but the main things to bare in mind are:
1) disable "put hardrives to sleep when able" in system prefs
2) DO NOT enable TRIM support by any third party software - the Samsung SSDs have all the garbage collection built in.
3) Do a clean install of lion using the make USB Boot disk hack - if you can - it's well worth it.
On point 3 above I originally upgraded to the SSD with Lion installed over Snow Leopard installed over Leopard.
A few weeks past and although I didn't get any of the issues to do with heat and battery deformation and beechballs that others have posted about I felt the old girl could still benefit from a fresh install of the OS.
I wasn't wrong. The minute I booted into the fresh install it was very obvious the machine was much happier than it had been for a couple of years.
Hi I have a Early 2008 MacBook Pro that came stock with 4GB of Ram. Saving up for 1TB SATA internal HDD. I have been using Mountain Lion for a while and my computer hasn't lagged out or frozen once. I recommend downloading it because it also puts you on the supported list for OS X Mavericks (because of the new 8x Architecture). hope this helped