HDDs DO NOT use lasers. They are not optically based storage. It is a magnetic head which reads and writes data on spinning platters. CD's, DVD's, BluRay, etc are all OPTICAL storage. A Hard Disk Drive is MAGNETIC. Please do some research before giving advise.
http://computer.howstuffworks.com/hard-disk.htm
That said, back to the OPs question. There are several factors to consider here:
- Do you need SSD? i.e. Do your computing tasks on a day to day basis actually requiere the speed? To me boot up times and benchmark numbers seem like a pretty dumb reason to invest in SSD because of Price vs Storage space. The trivial boot up time numbers are a load of crap since a MBP can stay on and sleep when you close the lid and use next to no battery power, and then instantly be ready to use the moment you open the lid.
- Is losing your ability to read / write DVDs really worth it? To me losing an optical drive to load an app 5 seconds faster is not needed. Then having to carry around an external optical drive in my bag is just a waste of space in my bag.
Here are the only real acceptable reasons to need an SSD:
- You're into / job is to edit and create video in software like Final Cut Pro.
- You're into / job is to edit and create audio in software like Logic.
- If you need to compile / render large files on a day to day basis.
If you do any of these then an SSD could be beneficial to you. But if you are doing this to be cool and to make your friends jealous of your boot times then well you are wasting your money and effort. Reading your original post it does not really seem like you fall into the category of needing an SSD.