Re: SSD drives vs Sata
Quad core in a laptop is pretty silly. Hardly any programs utilise all of those cores and threads, most recording programs don't even do 64 bit yet.
I'd go the i5 with the SSD. But as you said they core 2 duo with a SATA drive did the job well, so you could get a larger capacity SATA drive with the more effecient CPU, for video editing, i would be looking more closely at the video card and RAM installed.
If i was to build something like this myself, i would go an i5 at about 3GHz, 6GB RAM, 2 500GB HDDs (or 2 1TB HDDs in RAID 0), a new graphics mediumly powerful graphics card (ati probably, most cost effective), a nice gigabyte board and then whatever for the rest of it.
So, in short, i'd get the i5 cause you probably won't notice the performance difference in the dual core. The SSD will have a writing performance increase, but i doubt it would be noticeable, unless ur recording in 3D in HD with 2 simultaneous streams. So save some money and get an i5 with a larger capacity SATA drive.