I've been carrying a Steam 7 around for the last week as the second device in my bag.
My primary mobile work device is a Surface Pro 3 i7/8gb/512. I write software on it (more specifically I write drivers, there's a decent chance you have one of my drivers on your system right now).
The Stream 7, even with 1GB of RAM, performs fine. It boot fast, runs pretty smoothly, I can't really complain for $99. I had to go to HP.com to update the firmware and drivers, which seemed to fix some WiFi glitches.
I find I actually take out the Stream 7 more often than the SP3, simply because its smaller, lighter, and more convenient and I don't care what happens to it.
For example, I'm typing this right now on the Stream 7 while eating lunch. The SP3 stays firmly in the laptop bag, for when I need to work later. If I drop the Stream 7, or spill soup over it, or it gets stolen, or whatever, I dont care, I'll just go buy another one.
I also have a Venue 8 Pro, which used to be my second device, but it has been spending its time at home lately, mostly because of WiFi glitches but also because I wanted to see if the Stream 7 could replace it. Post updates, it has felt more stable than the Venue, which is impressive, again, considering the price. No WiFi problems, no connected standby hangs.
So far, so good.