Which is the better firmware for AceKard R.P.G.?

My friend thought it may be a good idea to get an AKRPG for himself, and was wondering if he should get mainly AKAIO or Wood R.P.G., or a different firmware, but the main debate is AKAIO vs. Wood. I think he should get Wood RPG since it's more updated.I personally don't see why he should get an AKRPG instead of an AK2.1/i, but it's his opinion not mine.