I used SMD Lunar Solo in 2008 which seems like the Oasis but with a bottom.
It's well made but I had a really hard time keeping the sides off my head and sleeping bag foot box. Not much head room other than at the peak. I really liked the side entry and the floor space but it was just a little to short for me with the pitch of the sides.
For comparison, my bother had a Tarp Tent Contrail. Same issue with the head room. He could keep the sides off his bag, but front entry is a pain and there's not much room for gear in the vestibule and no room inside. The Lunar Solo had plenty of room to keep my gear out of the weather.