I'd start off by saying that I've never used the Mac's touchpad, so I have nothing to compare it to, but it doesn't matter, since I use Win7. It'd be comparing an apple and an orange.
After I plugged in the usb receiver, it started working right away. I went ahead and went to Logitech website and downloaded their software, installed them, without any glitch.
I've noticed a lot of people thought it was just "ok" but after just one day of use, I must say, I'd give better than 4 star rating. Here's why:
1. comfortable (that's the whole point, right?).
2. Wireless, and the receiver is tiny, so I can leave it in the usb, and just forget about it.
3. small enough to fit on my workstation, but much larger than the touch pad my laptop came with (below the space bar on the keyboard).
4. I love the extra functions this touchpad has that my old mouse did not have. Two-finger touch/ scrolling, three finger touch (makes scrolling up and down on a long document much easier), and four finger touch (my favorite! Move four fingers up and all your open windows pop up and just choose the window you want to look at).
5. left and right mouse buttons. The fact that they put these buttons means you can do everything with this device that can be done with a mouse.
6. Price: at $25 (amazon daily sale price), it wasn't a big investment, but I'll be using it everyday at work!
Now here's why it didn't get 5 star:
1. The touchpad has margins about an inch on both sides. It can be annoying because your finger might still be moving but once it leaves the "sensitive" part, the cursor also stops. I don't find it that annoying, but I can understand some people's frustrations.
2. Hard to play games with. If you try to play Angry birds with this, it'll take a bit of used to. I don't play game on my computer, so It's not a big deal for me either.
3. speed and consistency: I guess every mouse has a bit of different "acceleration" and sensitivity to movements, and this device is no exception. The cursor moves a bit fast for my touch, but I think I can get used to it.
I hope this review helps!