1. it will work with any heat tape or pad, but it is an analog thermostat, (actually, its a glorified reheostat since it has a dial and not an actual number setting). I started off with one and switched because if your room temperatures swing even by a few degrees its going to need to be adjusted.
2. Maybe.. If you watch it like a hawk you should be ok. But, the point of a thermostat is to set it and forget it.. Reptitemp isn't like that.
3. See above for cons. The only pro was the price but it wasn't worth it. I ended up buying a johnsons controls within a month. I would have rather just spent the 80 on the johnsons the first time.