SSD's FTW!!!! They're sexy...oh so sexy. I regularly remove mine and give it a few licks, just to taste the awesomeness. My ex once said my SSD was an expensive little black box, and she just didn't get it, that is why she's my EX.
Yes they're expensive, yes they're small...bla bla bla... If you're the type of person that spends about 8 hours a day in front of a PC (and especially if you carry around a laptop that you use for work), stop trying to justify it, trust the people here who've taken the plunge, you'll never regret it. We all love that "fresh and snappy" feeling you get from clean Windows installation, well, my Windows (Win7 Professional, that I use for work, and trust me, I treat the poor thing like crap) is now 7 months old after I've reinstalled it for my Sandforce drive and it STILL feels like a brand new Windows installation, only an SSD can accomplish that.
I just think people should stop comparing SDD's to normal HDD's. It's simply not in the same realm. Rather think of an SDD as something extra you don't necessarily need but it completes your PC experience, it's on of those things that should have happened years ago.
For now you can accept the fact that they will "always" be smaller and more expensive than HDD's, but that's missing the point. Fact is many of us here on MyBB spend most of our days in front of a PC, if you're that type of person, an SSD is like adding leather bucket seats and a turbo to the car of someone who spends most of his days travelling. You don't pay for it becuase you HAVE to, you pay for it because it puts a smile on your face in an otherwise bland experience. Fact is that you get used to the experience very quickly, but take it away and you realise just how crappy things used to be... those always makes for the best investments.
EDIT: I'm running a Mushkin Callisto 120GB SSD in Dual Boot config with another Seagate 500GB on a G73 Notebook. It has more than enough space for my work OS and a nice small and snappy Win7 Home installation for gaming. An added bonus is the fact that my other 500GB Seagate makes for a nice external. So for R2.6K extra added to the cost of my PC I got all the speed I ever wanted (or at least, I know the expensive components in my Notebook aren't held back by the cheapest components in my notebook), and still have 1TB of extra storage for movies, music etc. Well worth it. Not to mention my notebook is now almost completely silent. In other words, if you have a smaller notebook with one HDD bay, yes, then the decision is a bit more complicated, if you have 2 internal HDD bays, it's a no-brainer...do it ... just .... do it.
Windows Experience Index Scores:
Processor: 7.0
Memory: 7.5
Graphics: 7.2
Hard Disk: 7.5 (Compared to 5.9 before the SSD upgrade)