You've come to the right spot for opinions.
We own a Fleetwood Bounder, really enjoy it & it's a great bang for the buck. We have had no major problems with our Bounder, and our dealer has been attentive to the few small problems we did have. IMO, Fleetwood is a good manufacturer. The Fiesta is an entry level unit & would probably do you fine if you were going to trade in a couple years.
That being said, I have to agree with the other posts that Tiffin would be at the top of the list of the 3 you are looking at, although it is quite a bit more money.
The extra room for you two that the king bed in the Winnebago allows, might be something you'd really like.
With all being the same floorplan, it's a matter of what the standard features/options are for the money.
Take you time, look at each one carefully & drive each one (if you can). You'll quickly find what fits your needs. Happy shopping!