There are a lot of pvc enclosures out there that would suit your needs. They aren't ugly, and have glass fronts, so viewing is easy. Keep in mind, a happy BP is a hiding BP (at least most of the daylight hours). I get it though.. I wanted an enclosure I could see into, even if my snake doesn't care to come out and play.

The cages you mention look nice. They do require a bit more work to keep husbandry in check than other enclosures though. You'll have to cover the screened cover with something... foil, plexiglass, or something... to keep heat and humidity in.

If you are pretty certain you'll have only one snake for a while, I would consider pvc, something around a 36"x 20"x12"... or something close to that. If you think you MIGHT get another down the road, I would recommend an Animal Plastics's T8. It's large enough that you could house two snakes in it all of their lives, or at least for 2 years or so. They are bigger though... 4'x2'x12". So they have a big footprint. If you can easily accommodate this, go for it. For the money, it's a great investment. There are plenty of reviews here on the T8, and I don't know if you'll be able to find a bad review.

Above it was mentioned about wood... If it's sealed and built correctly, it can be a beautiful and long lasting enclosure. They are heavier than PVC, and personally, I'm always afraid the moisture is just going to get into the wood and lead to problems. That's just me though.