
Dan,
I'm a big fan of the i30 CRDi motor, but the 1.6 petrol (GDi) motor is a good thing too. We have had three i30's which are/were all manuals.
The first 2008 (series 1) was a diesel and the Torque of the motor and the economy meant I struggled to get the smile off my face.
The Wife then had a 2010 2.0 petrol CW (wagon) which she loved still a series 1 aka FD)
She now drives a 1.6 Petrol 2014 series 2 Tourer (wagon)
She found the 1.6 petrol a bit underpowered (sluggish) around town after the 2.0 for a while. She likes it more now that it has loosened up after 7000kms and a change of driving style has helped. It is noticeably more economical than the 2.0 as you would expect and has excellent torque on the highway.
Your biggest problem will be finding a second hand manual series 2 that someone is prepared to part with.
Good luck with your search.