I'm buying HeartGold NOT because I used to play Gold Version.
I'm buying it because I want to Soft Reset for a flawless IV Lugia and Enigma Crystal Latios, and it's easier to do Soft Reset for them in HeartGold. How is it easier? Because I can easily check their IVs with the help of the Judge at the Battle Frontier. I'd Soft Reset for Ho-oh, but I have this feeling that I won't have access to the Judge and collecting 99 Rare Candies is a hassle.
Why Lugia? Because of its Base Stats.
Why Latios? Because in Emerald Version, Salon Maiden Anabel has one. Yes, my obsession towards this androgynous cutie forces me to wait for the US Enigma Crystal event. Actually, Latios was THE deciding factor in my decision to get HeartGold. Yes, that's how Anabel-obsessed I am.