My FED-2 was my speculative entry into the rangefinder world, and even with the frequently-dismissed Industar-26 I have been nothing but pleased with the results, and it's very pleasant to use. I'm sure I paid a bit more than some, having bought it from a reputable supplier (Fedka), but getting a good example probably made all the difference given some of the horror stories.
The Kodak Brownie Flash Six-20 that I picked up for $15 turned out to be a great foundation for a pinhole camera. I can't complain at all - probably the best bang for the buck ever.
I had a little trepidation about the Rollei 35, knowing that the ergonomics are a bit unusual, but I warmed to it quickly and still think it's a great little camera for times when bigger kit would be obtrusive.
I can't say it's unexpected, but I have really enjoyed my Canon P in the short time I've had it. I bought it after careful assessment of how the features matched up with my needs and reading glowing review after glowing review, so there was some expectation, but it's at least everything I hoped it would be if not more.