That is a very generous offer Poita! You must think highly of it.
Budget? Another language I'm sure
I guess the thing is, if I end up spending (which one inevitably seems to do) I would hope that I spend wisely and feel that I have acquired the thing that will best do the job (and the Astrotrac would certainly be at the top end of affordability for me). I know that it is too easy to go for cheap options that really don't do the job and subsequently spending again on something better.