I just got the VDO MC 1.0 (not the wireless version) and took it out on a ride today. It's easy to recalibrate the starting altitude...if you are starting at home, just hold down two buttons and it recalibrates to whatever you previously entered as your home altitude (360 for me). This makes it accurate for that day (as your pressure will of course vary from day to day). At the end of the ride (only about 24 miles today as I've got a head cold), the altitude was given as 361. Pretty good! The inclinometer seemed pretty accurate, though there is a 4-second lag, so even after you have flattened out, it still gives you readings for 4 or sometimes even 8 seconds. But it didn't have any major fluctuations, which is nice. It's definitely generous on the altitude gained. It gave me over 1300 feet over the 24 miles, which, while I'm sure this number is fairly accurate, it does give you every little foot you go up, even if it's not really on a climb. I would estimate (and I was paying close attention to the altimeter the whole time) that maybe 800 feet of my gain came on what I would actually consider a climb. So as long as you keep that in mind, I think it's pretty groovy. Buttons are solid and give a good click, the whole unit seems well-built, and navigating through the functions is pretty intuitive. Give the manual a good read at first, but I had everything down after about 15-20 minutes. At $100, I highly recommend it (albeit after only one short ride).
