I usually only wave to those in the exact same car as mine (Black 3 door mk5 GTI ed30), which is in fact quite rare in my area (county durham). That's why I get so excited on spotting one !
County Durham you say?
I'll look out for you!
I couldn't tell the difference between a GTi and an ed30 though 
Yes, it's quite difficult to distinguish - Ed30 has a small rectangle badge at the down right corner of its tailgate. And it usually comes with 18''wheel and tinted rear bumper as standard. Tha's all about the appearance.
I once spotted a black 5-door ed30 in the Tesco parking lot in durham and I parked right next to it to pay my greetings.
I often go merely for a drive on Sunny days (sometimes even raining days). May favourite driving route would be A691 westbound from durham to Consett and switch to A694 at shotley bridge and all the way to Newcastle. Or follow A697 switch to B6344 to Rothbury
