Okay, reporting back on a certain WD Scorpio Black 500GB. Guess what, that's out of the window, and nestling inside my MacBook Pro is an OCZ Vertex 2 SSD (120GB).

Why OCZ?

1. Researching the web points out the fact that if you use Mac OS X that does not come with TRIM support (It reports TRIM as No in System), your best option would be Sandforce Based SSD (Spesifically SF-1200 controllers, either the OCZ Vertex 2, Agility or Corsair Force - Those are the ones that are available retail).

2. Other controllers require TRIM support to keep writing performance at max. If you use Mac OS exclusively, do not buy Crucial. Requires TRIM support to ensure peak write performance over time.
3. Its either OCZ, Kingston, Intel or Corsair. Heard a rumor about Corsair's firmware issues. Intel, still too expensive, Kingston one gen behind.
First impressions :-

1. Whisper quiet - Seriously, the only noise I hear now is the aircond in my loft, the click of the keyboard and nothing else. The annoying low frequency whine is gone.

2. Blazing fast - Seriously, installed a fresh copy of Snow Leopard in under 20 minutes. Everything pops out now.