>>Basically, sanitary reasons historically when no electricity availableAnd since we do have electricity available, there is no reason for a separate bidet? Is that what you're saying? Looks like you have to have your pants and undies completely off for a free standing bidet and that seems like a lot of extra trouble. Looks like the amt of water that sprays from geyser would take a washcloth or handtowel for drying. The Washlet has two rear washes with multiple speeds and one front with the same multiple speeds. All can oscillate and or pulse. Water temp varys from cold tap to about 102 or more (maybe). Has an air deoderizer and dryer. Let's not forget about the heated seat :) I don't know, maybe there is something more desireable about the stand alone bidet but I haven't figured it out :) And if I ever move (doubtful) the original seat is going on the Toto and my Washlet is coming with me! :) Monica

It's always fun finding aftermarket kits when you try to fit a chevy engine into a Jaguar. I was lucky ones in the early 80's when I installed Chevy big block engine into a Jaguar and I believe the conversion kit was only available and would work only on cars no later than 95 or 96-year Jaguar. :-) That being said I doubt anyone makes it Universal bidet mounting kits for a seat to fit any toilet... If that's the route you want to take, go on Alibaba website and find a bidet seat there for a few hundred dollars Something Like This. and contact the manufacturer and see which model toilet that will fit. Just make sure you not gonna get electrocuted or something will melt on your behind because who knows what they add to their plastic composites :-) As you know cheap always ends up being expensive. Good luck

Thank you all for the advice. I went ahead and ordered the bio-bidet. I decided to go with it since it has a hybrid heating system. I read some complaints about others having an initial burst of cold water for a couple seconds before the tankless heaters warmed the water. Our well water is very cold, so even a couple second delay might be shocking!

@ykagan, I think the biggest thing for us is the spray patterns and water velocity. For my wife, the female spray patterns she prefers the BB1000. For me, I use the "enema" spray function a lot. Pressure is excellent, but however it all works it results in an easy bowel movement. Warm water, we both like, but she does like it more. Heated seat, my wife loves, me, I'm indifferent. Air dryer, I never use, she does occasionally. We first bought the BB1000. Installed it in the master bath. Then bought the Toto C300. Moved the BB to the kid's bath and installed the C300 in the master. We both soon realized we both preferred the BB1000 over the Toto c300. So I swapped them out. It wasn't a "new" versus "old", or a "what you're used to" thing. It was performance related.