Sitting here is a new in the box AIMO MS8211. It's marked 600V CAT III and is similar to the MS8211D in that it's a pen type as well. It has a back light, non-contact voltage detector and even a little flash light in the tip. It does not have the logic probe like the D model. Unlike the D model, they also use a mechanical 250mA fuse rather than the PTC to protect the current input. They claim the diode test is 1mA at 2.8V. This would also be a step up from the D model.
Keep in mind, like the D I doubt it will hold up to the testing well. Again, these pen probes just seem like a bad idea.
As usual, if there is any specific test you would like to see ran feel free to ask.