Having vacillated on the Domino for a few years now, planning to finally get one. Intending on the XL due to the overall capability, ergonomics and the fact that I will be needing the larger capacity. However, it's hard to swallow another $1000 for 3 sets of tenons, so am planning to get the set intended for the DF500 first, then add as needed. I am also getting the Seneca adapter at the same time, of course. The projects I undertake are mostly all for personal use and vary in size/shape/use/etc., so it seems like the wide assortment might give the most opportunity to try it out on multiple projects. Research indicates that 8mm tenons do seem to come up as the most used size. For me, I can see 6, 8 and 12 to perhaps be of most used but it's hard to say right now. Any sage words of wisdom to cast for this initial purchase?