Within reason I'm prepared to chuck money at the problem!
ChampagneCat has been with us 6 weeks now and so far we've been using the wood pellet litter - it's what I've used previously, what she had used in the rescue and we can also chuck it on the log burner when it's used.
However I have never known a cat make such a production over the litter tray and despite regular daily cleaning there's a certain whiff about the place (I'm hopeful the weather has played a part so far)
Ideally she won't go out until the springtime, and we are hoping to keep her in at night so we will need a litter tray for a long time. It would just be better if it didn't smell so bad 