I agree with the above the statements. Go 14s for a home powerwall application. You'll save yourself a lot of money down the road, as well as hassle. The inverters aren't much different in cost between 24 and 48V, but the "wiring" to run 24V will be at least twice what 48V would require.
If the runs are only a few feet, no big deal. But if you have the battery bank stored in one location, and the inverter in a different location (for example, on different sides of a wall with the battery 'outside' in a protected building), then the cost of wire goes up quick.
As far as brand of inverters, as Oberfail mentions, those are good qualities. The Growatt seems to be the new kid on the block, but is proving itself. On youtube, check out DavidPoz, as he's been doing tests using the Growatt inverters. I think he's even connected 3 of them in parallel for load sharing, if I remember correctly.