Hi Sweetas,
I'm a nappy advisor and have tried lots of differnt sorts on my baby and also have some colleagues who have tried as well, here's a summary of some of the nappies you have asked about:
BTP Baby Beehinds bamboo fleece
Absorbancy - Good absorbency and could boost if need to
Drying time (line or clothes rack) - Slower than some
Containment - The shape offers good containment
Ease of use - Poppers are quite easy to use but sometimes I suggest that if you are a 1st time mum & nappy user poppers can be a bit 'fiddley' especially when you might be delicate around a newborn baby.
Slim fitting - Haven't any experience on smaller babies, but on the bigger size I feel they are and they look like they'd be quite slim
Cute factor - Reasonably cute
any other comments - I like using them
Swaddlebees one size organic cotton velour
Heven't tried these but have tried the sized and pocket nappies, so here's my judgement on the sized
Absorbancy - OK and can boost if need to. In fact they are quite slim in front so I've found I've had to boost them with my boy who's a heavy wetter. I think they'd work without boosting on girls, and the one size will probably be OK on both as you'd have more in front anyway with the folding down
Drying time (line or clothes rack) - Slow, but the pocket nappies are quicker. All will stay soft
Containment - OK
Ease of use - Poppers again so maybe fiddley.
Slim fitting - I think the sized ones are really slim fitting
Cute factor - Very cute
any other comments - The swaddlebees pocket hemp is a nice absorbent nappy
Easy Peasy Harmony BTP
Absorbancy - Good absorbency and could boost if need to
Drying time (line or clothes rack) - Slower and dries quite hard without tumble drying
Containment - The shape offers good containment
Ease of use - Easy to fold down - but only come in poppers again, and once nappy is quite hard after washing, it doesn't seem so easy to work with
Slim fitting - I don't think they're the most slim fitting BTP.
Cute factor - Probably least cute
any other comments - I quite like them, I just whizz them in the tumble drier for 5mins to keep soft. However I think the Bumble and Bambeasy is a much nicer BTP nappy, both are cute especially the Bambeasy made of bamboo which is quite slim and also not as slow drying as some bamboo nappies.
Bum Genius
Only thing I can say about the Bum Genius is that I trialled it and got opinions from a few others. Firstly for the cost I thought it looked like a 'cheap' nappy - a bit plasticy. There was no way it would do BTP. My baby was about 18mths, average size and it struggled to fit him then. I was quite dissapointed with it.
Kissaluvs
I know someone who has used these, she quite liked them. They look really cute, I would suggest they contain well, as for drying time I'm not sure.
Hope this helps, also www.realnappiness.co.uk has information on other nappies
Anny