I have a dragon deck. What is funny is that I got one of those box sets that comes with a book and stuff, and it was 8.50, and it was also the one that I really liked. the next day when I went back to Hastings, there was another on the shelf for $32......so I think I was meant to get this one.
as far as spreads, I use the celtic cross, life path (a 21 card variant of the past present future, works in 3 week/month increments), and a relationship one that I found online. the relationship one works really well, it shows how things are going between you and another person and also what can be done to resolve any problems.
^_^
http://www.learntarot.com/yinyang.htm