Wyeast 3724/ WLP565 may be notorious for its long fermentation time, but compared to all the other Saison strains I've tried, it is DELICIOUS. Seriously, it's worth the time. The French strain is utterly characterless in comparison.
Ferment with 3724 until you run out of patience, then pitch EC-1118 on top of it. EC-1118 is great for this purpose, because (a) it doesn't need a starter, even in partially fermented wort, (b) it produces great attenuation, and (c) it has a very neutral profile and won't cover the saison taste with anything.