Don't bother with the D1/D1H. the D1X maybe, but the other two are probably not good to have as your only caemra. Battery life on the D1 series was not good- they used NiMH batteries which were heavy and had short lives. Many you will find today will have 3rd party batteries...but you'll see many going with 5 batteries. teh li-ion batteries in the D70/100 and the more recent cameras will be far superior in this regard.