I needed a mouse to travel with my laptop-even though it has a trackpad and touchscreen, I'm just used to a mouse. I've used a lot of wireless and travel mice, and have had issues with connectivity, size, or quality...
This mouse stays connected! I have never noticed any skipping or intermittent movement, and I have not had to 'resync' it since I first bought it (I've had mice I had to resync multiple times while using!). It's also handy that there's a slot on the bottom for the USB dongle.
Size is perfect - I'm 6'2", so a lot of mice are just too small. This is the size of a standard mouse, so some may say it's a bit bulky - that's fine.
As for quality, the buttons click when I click and only when I click - they're firm, but not overly so. The wheel scrolls nicely, and the overall fit/finish is good. One thing I like is that it only requires 1 battery, not 2.