Problem here is getting electrical to your toilet location? I was thinking about that too, but I didn't feel like making the leap to hiring an electrician to install / create a new outlet there.
I use something called a Tushy. It's purely mechanical. Downside is it's not heated, but that's proven fine for me. Took me about 15 minutes to install and I'm no plumber. No leaks, though I did have to check for them during install and tighten things a bit to get it right.
Search for 'Brondell swash nonelectric', available at costco and jeffazon. I have this and the electric version, and I find the non-electric is good enough and a fraction of the price.
140 year old victorian home. I managed to run a new 12 gauge circuit to my second floor bathroom myself to get an outlet in the right place. Took me a few hours to puzzle through how to get the line up there without breaking open a wall, but I managed it in the end.
Its going to be a _little_ tricky to get lines to the other bathrooms, but I'll figure it out when the time comes.