Does it have a quick-disconnect for the hosing? Yes.
Does it have a priming-feature, as well as self-prime after cleaning? Yes
Does it have locking levers? Yes, 4 of them. Seem sturdy enough to me
Does it have a solid sealing gasket? Yes
Is it double walled? I don't think so, but it is silent regardless of this "feature". Barely audible with an ear right up next to it
I have yet to see any catastrophic failure reports of the AquaTops, if you have, please direct me to them for further reading.
Until mine fails, or I hear of them failing any more often than the "trusted" brands, I will have no qualm with recommending them to others over the arguably overpriced, name-brand options.