I guess it depends how long you'd like the nappy to last for and how heavy a wetter he is.
The bamboo Totsbots (Bamboozle) that we have doesn't last much longer than the cotton Totsbots, with Erin - max 1hr on cotton with no extra inserts other than the sewn in one and 1-1.5hrs on the Bamboozle with just the one popper inserts. To get either to last 2-3hrs, I need to add an additional 2 boosters
I also found the same with the Lil Lambs as they're a similar design to the cotton Tots Bots with the sewn in insert and again I need to boost these to get them to last 2-3hrs.
I can comment on the Motherease Bamboo sandies/onesize as I've not used them (though do own a bamboo onesize
It just always looked to gapey on Erin's legs to encourage me to use it
Have you tried the bamboo Behinds? They last a bit longer than the Tots on a single insert (though do come with 2 as standard) and are pretty slim fitting.
Otherwise, I'd recommend the Little Comfort nappies. They're about as bulky as the Totsbots, not quite as high in the rise as a Bamboozle but with better waist adjustment, and with both of the boosters poppered in, will last Erin at least 3hrs
Drop me a PM if you wanted me to return the favour of a loan on any of the above