The WO GT71 is my first William Optics tube. It does what it promises and its imaging quality is nothing less interesting than its more expensive brothers and cousins. I've got this telescope from my favourite and always excellent reseller Ganymedes, in Amstelveen, as a temporary replacement for my at the time yet to arrive GT81. What a service from them! I must say that I liked it so much that I had almost forgotten I had ordered a GT81, a few months earlier. The GT81 is even better though, expectedly, and I'm glad I own it.