If you know about DMMs, why not get a used Fluke 80s series on eBay, in the $100-200, or $150-200 for a used Fluke 87V. Since its very durable and hold their cal for decades, most any of them are as good as new so long as it wasn't abused. There are also a few Agilent 1250s series in eBay too for slightly more money, but they are recent vintage. On what to watch out for, see a user's buy guide by excavortee, also an eevblog member.