[cassanra]

Honestly, I would keep an eye on both through the year. I have found that where I live, not where I was born, seems to give me a better indicator. If you are going to be where you are for most of the year I would use this. Yes, there is a substantial difference. And in a way that makes since to me. If your sun is under attack by malefics it will be under attack by malefics no matter where you are as they are the slower moving planets. But the suns placement in the solar can describe more how your location will translate this energy. But I think you can see a general consistent trend.
The natal house rising is the key for both.