Thanks for the info. LH has the best bassinets I have seen because they are large enough to accomodate your average <2 year-old kid. It might be kind of tight if they are close to turning 2, but overall the design is adequate.
I haven't seen the Finnair ones, but on their site they state that the baby must NOT be older than 6 mths old when using the bassinet (or "basket" as they call it).
SQ is ok with everything apart from their annoying policy of rushing to the bassinet row as soon as the seatbelt sign lights up in order to inform parents that they must wake their child and take them out of the bassinet. And of course SQ pilots are the most "trigger-happy" of all when it comes to overusing and abusing the seatbelt sign...