Good info as well. To boot, the mentioned "dual" drive only comes in one model. If it came with 500 gigs of SSD and 2 TB of HDD, it would be more appealing since the entire OS, applications, and data could go on the SSD, and the HDD part be used solely for backups.
For a laptop, I'd go with a SSD, but I'd also make sure to have a backup program and an external HDD. Unlike a spinning disk that can get data recovered, a SSD, once it dies, it is -dead-. No way of recovering anything, no way, no how. So, it is good to have backups to different media. (On my MacBook, I use an external hard disk for immediate backups. Documents are backed up via Mozy. Sensitive documents get stashed in a Apple Disk Image drive that is stored on Google Drive, so the only thing Google's servers see is a series of 8 megabyte encrypted "bands".)