I can recommend a couple things...if you enjoy the strings on Post, do yourself a favor and get Homogenic. It is one of my favorite CD's of all time and it will blow your ears off the first time you listen to it. Every track on the CD features some combination of electronic drums/synths, samples of an icelandic string octet, and Bjorks powerful, emotive voice. Hyperballad is one of my favorite songs on Post, but every song on Homogenic, to my ears, is just as good if not better.
You also might want to check out a CD by a guy named Johann Johannsson called Englaborn (this is an English spelling...the guy is Icelandic so his name has letters that our alphabet doesn't have). It's classified by many as "electronica" but the electronic touch is inaudible most of the time...it's really just chamber music. It's very dark and cinematic, and most of the CD explores variations of only a few musical ideas, but the strings sound lush and beautiful and the melodies are familar without being trite or cliche.
If you like Bjork and you like string sections, you can't go wrong with Homogenic. Check out the songs "Hunter," "Joga," and "Bachelorette," these three feature some great string parts.