I live in the PNW and have a 1/4 acre lot that is hilly in the front (probably 30% of the acreage) and is a bumpy in the back with a good mix of grass, moss, and weeds and stays pretty damp unless I mow in the afternoon. I'm between the LM2135SP, LM2156SP, and the LM2206SP with the current deals going on. Ultimately my preference is the best price to performance for something get me through the entire yard without needing to wait for a battery to charge in the worst case scenario: tall wet grass.
Obviously the 2206 is the winner in terms of power and quality, but with the current state of my yard I'm not too worried about the cut quality and we don't live in a neighborhood where lawn maintenance is a priority for many so there's not much pressure to have mine be immaculate. Ignoring the 2206 for a moment, is the extra battery on the 2135 going to give me a better shot at getting through the yard in one go compared to the single 10Ah on the 2156 or will the lower power negate the extra capacity? Curious to hear opinions that aren't just buy the most expensive one!