Rollei is a great camera. I had a 2.8E Rolleiflex and really liked it, in some ways even fell in love with it, but I couldn't justify keeping it when other medium format cameras worked for me in so many situations that the Rollleiflex didn't and because I sometimes have to spend money on things other than photography. The two biggest problems for me were the limitation to a normal lens and the inability to focus close enough to make a reasonably tight portrait without distorting the face of the subject. If you are working now with a normal lens exclusively, this won't matter. Lots of people say, you can just use your legs to move closer to the subject or farther away, but this often isn't possible or means you will be standing in the middle of busy street to take your photo. The cameras you mention will probably have a very dim focusing screen and the corners will probably be even more dim. This makes it difficult to focus and at times difficult to compose. That's why so many people are recommending a Maxwell Screen. You mention wanting to spend 200.00. A Maxwell screen, professionally installed will be somewhere in the neighborhood of 150.00 including shipping. If you are very young, have great vision, and don't shoot in low light, you may be able to get by in some situations without a Maxwell screen, but a great lens doesn't show it's virtues if you can't get it in focus and it's really difficult to evaluate a camera when you aren't sure you got the photos in focus when they were taken. You will also increase your chances of getting the best results with a lens shade which could easily cost another 20 or 40 dollars. Then there is the lens cap, which if you don't have, you will probably wish you did in terms of keeping the glass in good shape, and the prices of these can be anywhere from 7.95 to over 25.00. If you want to use a tripod you will probably want a Rolleifix, another maybe 30.00 to 50.00. The cameras sold by KEH won't come with a lens cap or shade unless the listing specifically says so. Lots of these 40 to 50 year old Rollei camera don't advance the film properly, don't focus correctly, have never had a CLA, etc., and you are really on the right track buying from a reputable dealer like KEH who has at least some employees who can reasonably evaluate the equipment they sell and who will take the camera back if you are not satisfied because the cost of repairs can easily be more than the price of the camera. Just mentioning some of the above things because the purchase price of the camera on these models is usually only the beginning in terms of basic or necessary expenditures and although the Rollei is well made, it needs maintenance, like a CLA, just like any other camera. All that said, if you get a Rollei in reasonable shape from a place like KEH and decide not to keep it, you may be able to resell it for close to what you purchased it for.
I have also used a Yashica D and Yashicamat which produced images that are pretty much indistinguishable from the Rolleis in my opinion. The Mamiya twin lens cameras are a little heavier and some people find them not as pleasurable to use, but they can make great images and have interchangeable lenses.
Good luck in your search,
Doug Webb