with a rasberrypi you have to run a pruned node, or connect an hard disk via usb2(there is no usb3)
with a bananapi you have a sata port so you can connect the hard disk directly. So with a bananapi you can run a full not pruned node. Everything else is almost equal.

I don't like pruned node because, if for some reason I have to perform a rescan I have to download the entire blockchain another time.

Also Im not sure if pruned node relays blocks.

Moreover: Eclair needs a synchronized, segwit-ready, zeromq-enabled, wallet-enabled, non-pruning, tx-indexing Bitcoin Core node. Eclair will use any BTC it finds in the Bitcoin Core wallet to fund any channels you choose to open. Eclair will return BTC from closed channels to this wallet.
https://github.com/ACINQ/eclair/blob/master/README.md

or

c-lightning currently only works on Linux (and possibly Mac OS with some tweaking), and requires a locally running bitcoind (version 0.15 or above) that is fully caught up with the network you're testing on. Pruning (prune=n option in bitcoin.conf) is not currently supported.
https://github.com/ElementsProject/lightning/blob/master/README.md

or

You must to be running a non-pruning bitcoin daemon with:

txindex=1
set in its configuration file. If you have an existing installation of bitcoind and have not previously set this you will need to reindex the blockchain with:

bitcoind -reindex
which can take some time
https://electrumx.readthedocs.io/en/latest/HOWTO.html#prerequisites

but of course those are special usecase.

As I was saying pruned nodes are good, but non pruned ar better.

because the sd card is too little, I don't know if an sdcard is able to store 150gb of data. usb is very unreliable and you end up with a corrupted blockchain.