i dont know anything about Wanee, but have been to NOJazz a few times and highly recommend it. pricey place at that time, tho. keep in mind that the those bands at the Jazzfest are playing over two weekends, seven days in total. and that there are a few main stages and many smaller stages with crowds in the 70K to 100K range, making it impossible to get around to see every band you want. but the bonus is that there are many other bands in town at clubs and theater in addition to those at the festival. ive seen trey, sci, mars volta, greyboy, denson and a lot of others offsite there. check here for a pretty full list of everything going on.