At one point, I had to log some measurements of voltage vs. time as sets of primary cells ran a load. I thought that a self-contained logging multimeter would be ideal for this -- I didn't want to be tethered to a PC (especially since I don't own a properly-working laptop).
However, I couldn't find a true datalogging meter with a reasonable sample storage capacity (some only had 10 or 100 memory locations) with good basic accuracy for a reasonable cost (I couldn't wait a month for something to get shipped from China, either).
I actually ended up buying a Protek 608 multimeter. I found that it really wasn't a burden in practice to be tethered to the PC, and if I do need remote datalogging I figure I'll buy a used notepad-type PC. The Protek has an optically-isolated RS232 interface (and the interface is bidirectional -- you can send certain commands from the PC to the meter. Some cheap RS232 meters are unidirectional). Is it as good as a Fluke? Nope, but I really like it. It's a good meter for the price. I bought mine from Tequipment.net perhaps 8 months ago, but now they are showing as being discontinued. That's a shame, because I received exceptional service from them and fantastic service from Protek too (although it's not supported by Protek USA -- you have to go through their parent company in -- if I remember right -- Korea).