Well all SSD benchmarks I've seen online show satisfactory, if not improved, read/write performance compared to your traditional hard disk. If anything, people only fault SSDs for supposedly draining a laptop's battery faster than hard disks.
I've installed a 32GB MTron SLC drive for my system (Windows XP 64 bit) with a quad core CPU and it runs like a dream, no waiting for anything, windows and menus open just like they're still in cache. I have a 1.5TB RAID5 D drive that's runs like an injured Mountain Yak in comparison.
Also use one for the Laptop, same drive with a 500GB secondary, software compiles in seconds.