I use an ISFET meter from Hach http://www.hach.com/h-series-h138-elite-minilab-isfet-ph-meter-with-calibration-buffer-set/product?id=7640516428&callback=bc
Great meter, can store dry, self calibrating and can work with a drop-sized sample.
Rawlus, I noticed that meter says best from 5-9 ph, is that a problem here at all. I love the fact its stored dry!!! A little pricey though huh.