The Texas 1015 Sweet Onions are OK, but not nearly as ood as Walla Wala Sweets.
There is a magnificent onion that is locally available in Texas, during a one-month window (which just started).
Noonday onions -- grown in the vicinity of the Noonday community (near Tyler).
Sweet, full of flavor, just enough heat to highlight the flavor. Fabulous when broiled on the grill (in foil, with butter and worcestershire).
I agree on the Wala Wala, on on the west coast we get a lot of so called sweet onion, they rarely are. Have to drive back through Texas and Oklahoma to get the genuine article. The last few times I tried Vidalia sweets, I could have saved money by bying the old standard yellow onion, they were really hot and not in the least sweet.