The guys at levelnine are great, but I don't think any of them are bump skiers. I would totally take their advice on powder skis, but I'm sure they're just going off of what they've read/heard on bump skis.
I would assume that a "bump ski" is going to be best for bumps, but unless you're really obsessed with bumps or want to compete, I'd just select something that doesn't totally suck in them. Most all mountain skis can ski bumps acceptably (or better). Your best bet is to demo a couple skis that you narrow it down to and then try them in the bumps.
Demoing doesn't have to take a long time. Last time I was debating between skis, I went up and did it all in one day - I think I demoed 6 pairs of skis. Any on mountain shop will let you trade them out all day long, so just go and take 1-2 runs on each pair and take notes. I think this is far more effective than spreading it out over a longer time period, as it's hard to factor in variations in the snow and things can be different day to day. I would take each pair of skis up to the top, ski some moderate bumps down to a fast groomer to see how they carved, over into some trees, and down an icier/steeper groomer to see how they held an edge. If I hated them at that point, they went back and I got another pair. If I liked them, I'd take them on a second run and hit a few more things. After the second run, I'd take them back, get something else, and write down my notes on how they performed in each area.
People do their best when reviewing skis, but there is still nothing like actually trying them out to know what's best for you. There have been skis that I thought I SHOULD like, that I really wanted to like... that just felt horrible on my feet.