Personally i wouldnt bother with the ME BTP nappies. We didnt get on with the ones we had when DD was younger and they are massive and bulky
Do you get on with the tots bots bamboozles? Might be best getting a few in size 2. Little lamb do a good fitted bamboo nappy also. Totsbots do easyfits - which are an all in one, think they are about £18 each though but they've had good reviews. Bumgenius are popular pockets but their inserts are microfibre so you might need to buy your own inserts to get them to last a reasonable amount of time.
It depends i guess more on what you are preferring out of what you have....do you have a heavy wetter? Bamboo would be better than cotton in that case. Are you happy with fitted and a wrap/wool/fleece or would you prefer more pockets/aios?
Hopefully someone will be able to help more soon xx