We have a couple of the new Fluke megger/DVMs, they work great, so easy to use you may not trust over the handcrank type. This meter is designed to be carried by an electrician who normally would not have a megger. About $350 if I recall.
Work on what? Do you do transformer or motor testing on 480V motors? Do you test hundreds of breakers or cables a week? Do you do anything with MV equipment?