The phones with the best / most accurate compass sensor

Hi,

I want to write an Android app which relies heavily on the phone's compass.

I'm looking for a phone with a compass sensor as accurate as possible and low latency/inertia.

Are there any reports on comparisons between different phone models or makers..?

From what I've searched HTC, LG and Huawei phones seem to be good as far as the compass is regarded; HTC uses Asahi Kasei's sensors.
I could find more complaints about Sony's Xperia.

I'm thinking of choosing from HTC, LG, Huawei, Galaxy, ZTE, maybe Xperia but I'd like to know some legitimate opinions first.

Thanks.