Definitely get one, or two, or three - lol!! There's little to nothing one can't cook in cast iron.
And I agree that Lodge is the best. Here's a link to their website which shows everything in their current line:
http://www.lodgemfg.com/ Their online prices seem high, as well as the shipping (because of the weight), but I picked up both my Lodge pans at Wal-Mart for between $20-$25 each.
I started out with their grill skillet, which has ridges in it that make lovely "grill marks" on meat, fish, etc. Had so much fun with that, that I then picked up a large plain skillet which, helpfully, has a small handle opposite the regular one to help carry it (again, due to weight).
Lodge now puts out a "pre-seasoned" line (for more $$, of course), but seasoning the pans yourself is SO simple, I'd go for the regular line & just do it yourself. While you do have to be a bit careful with cast iron (it does break if dropped), it last's forever & can & has been literally passed down through generations of families.