I use Milwaukee meters. Here are some Amazon links for you to use as reference.
I had one of these for a longtime
This is just PH, if you want to go the seperate pen route
I owuld try and find the multi-meter because, all electrodes die eventually, even with proper care (very important), wear out, and the MW801/802 has a replacable electrode. I also had an older model SM802 of the Multi-meter that was line green colored.
*Here is the replacement electroe for MW801/802
*This replacement electrode does not work for the old SM801/802 models.