To answer your questions Holly, I don't really have a single favorite model, but quite a long list of favorites. They all look different, and have only a limited critical few things in common, confidence, femininity, good social skills, good manors and they are all fair with me. They may be nasty or mean at times, I love tough/strong women. Also they all have a good sense of their own sexuality, even those who are non-nude.
I visit anyone on my friends list who says hello, so those who don't like to keep in touch may be waiting a while until I reconnect with them. I do often miss someone, or find them looking particularly amazing, so will suddenly turn up to visit even months from my previous visit.
If I choose to visit someone I am almost always prepared to spend on them, favorite or not. Favorites do get any extra support they need, including tokens if I have them/ can add them. Most of my favorites are pretty respectful, but one or two more selfish/ hustler type favorites I wont spend on unless it is directly for myself.
I have lost a few favorites due to arguments, and a few have left camming for other things, but as a rule I have been lucky to still visit everyone else from time to time.