But not directed to you or this thread, some SSD evangelists go so far overboard in their hype of how wonderful SSD is, when it's just not all that significant.
No offense taken. I was being intentionally spastic.
It certainly does depend on the machine and usage. I'd probably experience less immediately apparent benefit on my desktop as far a launching programs goes, since it has enough RAM and Win7 is smart enough with its memory usage. Once I start accessing the drive though, like for loading/editing media, it's a noticeable benefit. Maybe not eleventy-billion times faster like some people have a tendency to make it out, but it is a very pleasant difference. I use a SSD on a machine at work, and it was definitely the second greatest upgrade to that machine, next to putting in adequate RAM.
As far as the OP goes, the bulk of my home desktop's boot time (or at least equal amounts) seems spent on bios and hardware garbage. 25% reduction in boot time in that case definitely isn't alone worth the SSD cost. It's even worse with workstations and server motherboards.
The benefits for laptops, with their integrated hardware and bios, and most of which use shitty 5400rpm HDDs, are absolutely tangible.