If you had a choice which ssd would you buy?
I currently have the Crucial M4 128GB SSD 7mm (thin) model.
However if I was to buy another one today - if I could find it would be the Samsung 830 128GB SSD just to give it a spin.
What are your complete system specifications? Your SSD is a decent one - it won't win any SSD races but it's still somewhat fast (and way faster than a Hard Disk Drive).
You can modify your System configuration for boot up. Go to your Start menu and type in "MSCONFIG" without the quotes.
Click on the "Startup" tab - from there you can disable programs that you don't want to start up on boot - which can shave off a few seconds.
For example, I have the following disabled:
Java Auto updater (it doesn't need to be on all the time....If I need to update java i can do it myself. ET Don't call home!)
Adobe Reader /Manager