I'll be the dissenting opinion...if it's just a DD work truck and you're gonna haul a small trailer now and then, the S-10 will be much less expensive and get the job done.
Sorry, I don't know the long-term reliability of the S-10, but all you really need is four wheels, engine, bed...so if the S-10 is reliable in the long run, definitely give it some serious thought since it'll be cheaper than the Yota.
Of course, this being a Yota site, you should get the Tacoma

.
Also the 05+ Tacomas are as large as a 1st-gen Tundra...so maybe consider an early model 1st-gen Tundra with the V8, they're nice trucks and blue book is pretty cheap for the 00-02 models.
If you're gonna keep it long after you're done using it for work, one of the 98-04 Tacomas will run for bloody ever, they just have a smaller box and the aft section of the frame is notoriously weak.
Hope that helps, good luck with your choice.
-Sean