I love MG stuff. Been buying it by the truckload for many of the AZ crew for a few years.
Grips - I've bought a few putter grips as replacements for the Super Stroke. My complaint is that the rubber button at the top is ever so slightly larger than the grip itself. I hang onto the very edge of the club so I can feel it. Most people won't.
Gloves - I've probably ordered over 200 DynaGrip Elite gloves. Almost everyone from my golf groups use them, when I place an order it is for somewhere between 30-50 gloves. They stretch a bit more than a top of the line cabretta glove over time, but given they are 1/3 the price, I don't care. They're excellent gloves.
Balls - they often have brand new ChromeSoft balls on sale at a big discount. They currently have the Graphene model for $30/dozen. The only catch is they don't come in the original box, but they are 100% the identical ball. I bought a bunch last year at $23/dozen.
And finally, the rangefinder. I have the MG600S, have had it for somewhere around two years (maybe a bit less). My only complaint is the slope option (cheater mode) is a simple button press, right next to the zapper button. It's easy to accidentally flip back and forth between modes, which is a no-no if you're playing a competitive event. I wish it were a switch or something that required a bit more effort to get into. Other than that, zero complaints. Compared to my previous Bushnell model (which was $500), I really can't tell a difference. Easy to hold, batteries last forever, locking in is no issue, can zap anything you want. The digital display on the side is also quite nice. I didn't think I needed it, but I'm glad I have it. If you zap something and aren't really paying attention, then realize you don't remember the number you zapped 10 seconds ago, just look at the side. It's right there. Also puts skittish playing partners at ease when they think you're trying to pull a fast one on them.
When this one craps out on me, I'll happily buy another.