Don't remember trying the Golden Champa - is that a newish one?
Some of the 'Tibetan' ones are a little compost-ish - the Sorig ones are a much better quality than the others that I've tried - the Zimpoe apparently have sandalwood & rose, so I will investigate others soon.
There appear to be Bhutanese ones available too.
The Mandala ones here (saffron) are made in Nepal and the saffron is evident amongst the other ingredients but unlike any Indian champa that I've tried.
There's a 'Resin of Purification' being made with ginger & pine, amongst other things, which sounds worth trying too.
Can you tell which Monastery those were made at, Jack?