My suggestion is to find an inexpensive TLR and give it a try. You can usually get your money out of one if you are not happy assuming you don't overpay when buying.
My primary cameras are TLR's. I have a Mamiya C330 system with many lenses. It is good equipment, but heavy to lug around if that is you intention. I found an early 1950's Rolleicord which has moved up to the top of my favorite list. It is very light and portable, with a very good lens. I am free to take it almost anywhere because of its compact size, light weight, and one fixed lens configuration. I carry it in a fanny pack with a small meter, light weight flash, lens shade, filters and film.
After years of carrying the heavy Mamiya around (such as on vacation), I realized that I was taking 95% (or more) of my pictures with the 80mm (normal) lens. I still enjoy the Mamiya, but it gets carried in and out of the trunk of my car with a tripod, not on a walking trip through the city.
The TLR's do require more deliberation than shooting with an SLR or rangefinder. I want to try a 6x7 or 6x9 light weight rangefinder for street photography.