We have really enjoyed using Ecobots nappies.  We have tried other types of  reusable cloth nappies, but we keep coming back to ecobots.

We like them because they are:

easy

I can give a cotton prefold and an ecobots cover to a bloke and he can get it on with no instructions.

No folding, no pins, no complicated pads or inserts, no flaps or wrap round bits.

No problems for babysitters or childcare

With ecobots prefolds, you only need to change the inside nappy and not the cover (unless it is soiled).  That means you can buy between 4-6 covers per size rather than 18-24 like you would with fitted nappies.
This means that ecobots prefold nappies not only save you 80% of the cost of disposables, but they are the  most cost effective modern cloth nappy system.

Leakproof

Ecobots covers have a double leg guard and elastic round the back.  if the cover fits - it wont leak.  We have been really pleased with how often we can sit in a coffee group and listen to others complain about their (often disposable) nappies leaking wetness (and more...) out the sides

Slimfitting 

Fitted nappies tend to have the absorbent layer right round the waist and this makes them bulky.  Ecobots prefolds sit in the middle of the cover - not round the sides.  This means that standard sized clothes will fit over ecobots reusable nappies as there is no bulkiness around the sides.  (This is also one reason that we don't recommend using a snappi with a prefold and a cover over the top - it adds bulkiness around the sides where it is less useful for absorbency.)

White

White nappies will suit both boys and girls.  You expect that you can re-use your modern cloth nappies with more than one child - with ecobots there is no problem wondering whether you should use your pastel pink nappies on the newborn baby brother!

White nappies are unobtrusive!  You buy (and get given!!) gorgeous wee clothes for your baby and you don't want to outshine your pretty fabrics with a vibrant print showing through.  Like a VPL for your baby!