I have an Asus EeePC with an aftermarket 64GB SSD. SSDs are all that are available for the EeePCs (it originally came with a 4GB SSD
).
So far, it's been great - fast boot and shutdown times, quick app start & processing. Just takes time to get used to the way it operates - the stuttering and (very) brief freeze as it reads & writes. Unlike a traditional HD, there's no platters (obviously you knew this), so data is read like a CD. But with a huge chunk of memory, as in SSD, it just stutters - then just shoots right quick through the operation.
It boots & shuts down quicker than my Acer (both run Linux), and it's much more durable as well. Only problem is that it gets really hot, but never overheats
.
For a laptop or PC, I'd recommend NOT replacing your HD with a SSD until next year; Sony and other manufacturers have had massive problems with fragmentation in the drive, resulting in VERY slow computers. Defragmenting a SSD is apprarently much harder to do - and more complex - than doing it on a traditional HD. Maybe R&D will finally come up with a solution within a year or so.
Otherwise, it's better to leave SSDs to netbooks - the expense of a SSD in a laptop or PC alone is too much, and you can get a really nice HD for a great price right now. I upgraded my HD in my laptop from 32GB to 160GB for less than a hundred dollars. Plus, the newer HDs are less susceptible to shaking, damage & vibration.
Hope that helps.