One reason not to choose Njalla is that they changed their legal entity without (to my knowledge) telling anyone. THat's a bit of a red flag for me.

They were incorporated as 1337 Services LLC in Nevis (the Caribbean island) and recently it suddenly changed to Njalla SRL in Costa Rica. Looks like some guy wrote a post about it where he contacted them, they said "internal restructuring, nothing to worry about" and refused to elaborate further.

I know Peter Sunde (of TPB) founded it but I don't know if it has changed hands now.