@Buzzdavidson, I got a pair of cywm6935's from Mouser a while back. They're really easy to interface with, and I made an RF spectrum analyzer with one, along with trying out some communication between the two. I got a fairly reasonable data rate with the right setup. Just beware the ANNOYING 2mm pitch connector, and the 3.3volt logic levels. I ended up using this to connect it when all else failed: http://www.sparkfun.com/products/8732
My multimeter has been playing up over the past week or so, so I decided to buy a new one (http://www.maplin.co.uk/ut-70b-autoranging-professional-digital-multimeter-34800). It looks like a quality piece, and I really hope it is, given the price. (Just bought this, so I wasn't planning on buying anything for a long while)...My old meter cost £15, and came straight off eBay. Although it looked like a good one, I was a bit sceptical, given the price. I have had it for somewhere around a year, and it was producing some interesting results, recently. I was testing a battery (should have been giving 1.5V) and found that, according to my 'meter, it was giving somewhere around 3000V. Hmm, something odd there!Onions.
That new meter appears to come with a RS-232 serial interface. A nifty project would be getting it to talk to your arduino as a serial connected multimeter.
I'm still using my mid 1960s Simpson 260 VOM
Unfortunately, my latest purchase was a PTCR and starter capacitor for the ac on my RV.