4th Gen D/P/P or HG/SG

[Starry Windy]

It's tough choice because I find that D/P/Pt and HG/SS are both good in their own ways. But if I must choose, I'd going for D/P/Pt because it has interesting story plot, and also, Cynthia and Distortion World.

 

[Rainbow Cloud]

HG/SS, Johto is my favourite region and I started playing in gen II so I was always going to love their remakes. Walking pokemon was a great addition too.