In my opinion, a right Hyatt timeshare is the best II trader.
Low season Hyatt week worth 1,300 points can be found for free, or close to free, and it comes with a free Gold II membership. Maintenance fees are about $1,200. A high season 2br costs 1,300 points in II.
A high season Hyatt week worth 2,000 points would cost about $5-$10k to buy, depending on the resort. But you get 3 weeks in II every 2 years. 1,300x3 = 3,900 points, you are getting 4,000 points in two years. This brings maintenance fees cost per week down to about $800.
Hyatt points get top trading power in II and can see everything. They are also good for a very long time: you can confirm an exchange starting one year prior to your deeded week, up to two years after your deeded week, and then can actually travel another two years after that, and then add another year using eplus. 6 years in total to use your points.