I too started at 24v (7s). But over time realized that for many reasons (shear amps / wire size / inverters / PV array+controller) had to go to 48v system to produce 45Kwh per day (in summer) and I'm only powering 40% of my house!. For example, my home has 240v @ 200amp main panel service. A 12,000watt inverter = 240v @ 50amp - e.g. 25% of grid service.
To supply a 12,000 watt its 48v @ 250amps. At 24v system, that would be 500amps - and you have trouble (and more expense) finding circuit breakers etc at 500amp range. My PV array to supply this 12,000watt inverter is 7Kwh - e.g. I have 2 strings of 48v @ 70amp (and 2 Midnite Classic 150 MPPT controllers). You won't find it convenient to have a 7Kwh PV array at 24v level as you'd need double the controllers (and wiring).
Bottom line - IF you are shooting to power a home, AND that means 240v@50amp or larger... I would research the overall chain of parts starting with PV Array -> Controller -> Circuit Breakers -> Battery Bank -> Inverter and associated things like wiring, transfer switches etc.
I can attest that 48v system WILL get you 240v @ 50amps.