POP ones are fantastic, fab colours and you can buy their fleeces which attach in or be taken out to use it alone, or just use the coat for rainy, milder days. They are expensive but wash and wear brilliantly so can be passed down or sold on ebay for a decent return, i just got £31 for ds2's 6-12m outgrown one, without fleece, it still looked like new.
thanks everyone. The M&S one is quite nice but not sure if its actually showerproof though. Looks like It might just be cotton.
Only need a showerproof one for autumn/spring as she has 2 bigger winter coats already, just needs something lighter. They all seem to be big coats. DD is awkward to as she's an odd size. Skinny as a rake but with long arms!