The stock headlights are pretty good. I'm assuming you primarily want more high beam for deserted roads?
I have not added any front facing auxiliary lights on the Tacoma, but have owned a few sets on previous vehicles.
The best bang-for-the-buck was a set of Pro Comp 130 driving lights. They are 130watt halogens, 8 inch diameter lights. The beam gives a good distance, while also being somewhat wider than a normal driving light. More like a "eurobeam" style that a bigger ($$$) manufacturer like Hella would put out. It's been awhile but I paid about $40 per light and built my own harness, though you could buy one pre made.
The Hella 4000 in Eurobeam also gets good reviews both online and from members on this board.
The popular Hella 500s, IMHO are not enough of an upgrade to help with seeing large animals that will destroy your truck/cause injury if you hit them.
The issue on a Tacoma is where to mount them. There are plenty of light bar threads on here for you to search for and check out. I am leaning towards the KC bolt on light bar that bolts where the stock tow hooks are.
Edit: Hate to post up a link to another site, but couldn't locate a good pic of what I am talking about on here.
Those are the Pro Comps I am referring to, and I believe that's the KC lightbar.
Search also for N Fab lightbars, those are the cheapest, I think.