We received the mySky as a gift this past Christmas and have now been using it many evenings for almost 2 months (on the initial set of batteries, no less!). Build quality is satisfactory though not impeccable. The setup and alignment is very straight forward though don't make the mistake I made and set it on a METAL patio table while aligns itself.
It reliably finds almost any object down to about mag 4 in our light polluted suburban skies. I've found it to be most useful for confirming what we think we've found based on what we see in books, etc. Most of our observing is through a 60mm alt/az mounted refractor and some 8x40 Nikon binoculars.
It's hard to justify the cost (even at the reduced price) over a pile of good books, a lunar map and a planesphere. However, its fun for kids and easier to read in the dark.
Speaking of which, if you're actually trying to look at anything in the night sky you will need to dial the brightness down to the point that it switches to just shades of red or your night vision will be ruined.
Pros: Simple, Quick Setup
This review was written in the old system and had content requirements that are different than reviews written today.