Circuitstudio should have paid upgrade / plugin options exactly for this situation, instead you are left with the big gap in price and features to AD. Altium is missing (yet another) trick here.
As mentioned, if you are working with small to medium companies, there is a strong chance they are using AD. That also means if you are ever looking for a job in that type of company AD might be the better option to have on your CV. (I have no statistics on that, just my feeling here in northern UK)
However, OrCAD 17 looks very capable and pretty (I've never used it) and quite a saving.
Got any parting comments on CS, have you enjoyed using it, up until hitting its limits (length matching)?