I dont know where you get "loads, just a few degrees apart"; other than the Sky cluster, where they have several sats old and new, all beaming the same channels, but at different parts of Europe, I have only ever come across one close pairing that wasnt 2 versions of the same sat system. Of course if you are going out looking for the weird sats and odd channels* that most people have never heard of, then yes, something a bit more pro is needed; But that bit more pro cost a LOT MORE money. *Does Red Hot Dutch still broadcast?? (ninja)
Use this and satelite finder app and set hotbird under 2 minutes (that alltogether with conecting and going on the ladder)
That's the point though isn't it? You have no idea if you are pointing at the actual satellite you want. With loads just a few degrees apart it's still hit and miss. Of course you can use a sat box with a known channel on a known transponder which you can do without this anyway. It could be more useful for DVB-T I guess. If you're doing it regularly a pro unit is a must, semi-regularly I'd go for a cheaper pro unit and if once in a while I'd go for the box method.
Cheap Satellite meters on eBay (UK Stock) for under a Fiver delivered will be just as (in)accurate as this!
Tried it and returned it, would have more luck with my finger in the wind!