As bilgami said... go with AMQ's. They are a bit more $ (about a $2.50 or so gap from MQ's depending on where you buy them), but worth it. Here is some more info...
Found this article about them-
The AMQ Series is designed to offer improvements in regard to drop-outs, clogging, and still-image playback over previous Panasonic professional DV tape, and to provide higher signal output and a lower error rate. A dry-type lubricant and a durable diamond-like carbon (DLC) film with extra thickness are designed to increase durability during still image playback and extend VTR head life. These advanced production technologies allow the AMQ tape to stand up to the repeated rewinding, fast-forwarding and playback typical of professional editing.
Panasonic reports that the new series offers a new surface treatment process (Super Advanced Metal Evaporation or S-AME) for improved magnetic density and an increased output level of +1.2dB, resulting in a more precise and secure recording. Improvements even extend to the cassette housing, with a new gray color, dust-proof anti-static lid and durable ABS resin shell construction--the same material used for high-quality data tape.