Things to consider beyond the zone vs RF focus system...
Many of the Land Cameras use a custom battery that will need to be replaced with modern batteries. The Model 100/200/300 series are usually 4.5v (I think some are less or more but all of mine are 4.5v) and so you'll need to get a 3 AA battery holder and replace the old battery. Or if you are clever, you can use a 9v with a resistor to cap it at 4.5v output.
The shutter system on the nicer folding Land Cameras is much easier to use then the Colorpack. The folders use a shutter cocking lever and then the shutter button itself is very easy to press. The Colorpack has a pressure button as the shutter that takes a little more strength to press and as a result, if you aren't really steady, you can slightly rotate the camera as a result of pressing the shutter.
The zone focus versions are usually in feet not meters. For me this is odd since I am American and used to feet but with cameras I am so used to meters. Some of the zone focus models also have a little square in the viewfinder that is for portraits, you are supposed to set the camera's focus to the mark for portraits and get the models face in that square to have focus. it's supposed to aid in focusing but I find it to be less accurate then I'd like so I measure and hope for the best.
The RF system comes in 2 kinds, the standard system which is common on the 100 and 300 models and then there's the Zeiss RF system which is coveted and comes at a higher price. I believe it comes on the 250 models and a few others. I've used both and I don't see a huge difference honestly. For the RF system, you have 2 holes liek many older RF cameras. The RF hole is tiny, but it's very easy to get focus in, then use the big easy to see viewfinder for composing. I've not had any issues with it. The only thing you need to note is, make sure if you get a folding LC with the RF system, make sure your camera fully expands completely. I had one or two that did not fully expand and this throws off focus.
The other thing that seems to be a preference kind of thing is the chemical press system on these. It comes in two formats... bars that press the chemicals out and spread them and rollers which do a much more even job of pressing the chemicals out and spreading them. Some prefer the rollers over the spreader bars. I honestly don't have a preference and use both. The key is to make sure that keep either one clean and if you use rollers, make sure they are clean and roll freely.
Last note, some models of LC have a LCD timer back on them. These models can sometimes press into the filmpack and make it difficult to pull out the shot. I'd read that some people remove the timer system completely, other's will just gently barely open the body enough to get the shot out, then close and pull. This isn't a problem once you are about 2-3 shots into the pack from I understand.
My suggestion, still, find a cheap Colorpack series with the AA batteries and play with it. Then once you are in love and ready to spend a little money, get a 250 or something fun!
