Sunny makes a Keiser style (rear 7 lb wheel) bike:
I bought one 3 months ago and have been riding 3-4 times a week with the peloton app. It gives you cadence which is really the only thing I care about. It also does HR but I don't use it. As for resistance - the whole benefit of cycling classes to me is that you tailor the effort to your fitness level. So if the instructor says 45 resistance I don't really see that as being crucial. From context clues you quickly learn that 25-35 is flat road (little to no resistance), 35-45 is moderate resistance, 50-60 is heavy, and 60+ would be maxing out. So I just follow along with those guidelines pushing myself as much as I can.
We use the Sunny SF-B1709. It sits in the corner of our smallish bedroom. We have the app paired up with a Wahoo Cadence sensor. We don't use tablets and instead just use our iPhones. I love the bike as it is quiet, sleek, sturdy and it wasn't too expensive. Before buying this bike we used a free Sunny felt resistance bike that we got on Craigslist. We liked Peloton so much that upgrading the bike a bit seemed like a great idea.