Hi! Well, now for my 2 cents. I own a cube with one run extention (6ft run), 3 EE pullets (32 weeks) and am currently in the process of getting DH to build me another coop. If you know you only want three hens then the coop works great (esp. since your legal limit is 4). Our legal limit is ten and I just can't resist... I'm planning on turning the Eglu into a 'training coop' for the kids eventually and maybe to house a show chicken or two for now... Need to convice DH...
Advangates of the cube-
-Super easy to clean 5-10 min a weekend of general maintenance will keep it up, add in a 'deep clean' every six months or so and you'll have a coop that is neat as a pin.
-Blends in fairly well (Green)
-2 person move (with an attached run, the flaps that keep dogs from digging in tend to get caught while rolling)
-Transporting- kinda goes with moving it around, but this is a coop you could easily take with you if you ever had to move to a new home.
-Fast and easy assembly
-Easy access all around
-Predator proof
Disadvantages
-Price
-Limited space -They say the nest box is big enough for two at a time but mine will only use it one at a time. It's a good thing Shania hasn't started laying yet or I might be having issues. Then again, we just had an egg in the run the other day so... There are some work arounds for that (installing a makeshift curtain so they're not staring at eachother, but I haven't tried that. Mine also like to sit/perch on the divider between the nest box and the regular coop area at night, resulting in great piles of poo in the nest box in the morning.
-Not 'predator proof' against two legged predators. There is no way to install any kind of lock if you needed to. If you're in a good neighborhood, not an issue. If you're somewhere where your hens might be eyeballed for a prank piece or you have the unpredictable/disrespectful neighbors from H***...
Notes:
-The ramp bars are often noted as a possible issue. My ladies got used to them after a month or so and now use them without issue. I think they're just spaced a bit far appart for smaller/younger birds to comfortably navigate.
-Gaps. Cubes will often look like they're developing a bigger gap on one side than the other. It's normal and the way they're put together it doesn't affect the girls at all (no water or breezes get in through them)
If you decide the Cube is for you, great! They are very useful and will likely endure forever so you never have to worry about rotting boards or sagging roofs. If not, they have plans for smaller chicken coops on
Ebay to help keep expenses down. We got our plans(4x6) for $20 and the materials for $465. It all comes down to what really matters to you. Minimal inexpensive do-it-yourself (basic Kia Rio) or the all-done-for-you-lay-back-and-chill (Mercedes Benz).
I did a thread on my Cube, if you want to look around it a bit...
https://www.backyardchickens.com/forum/viewtopic.php?id=386522
Good luck deciding!