Someone did a comparison of (1) stock, (2) APC 11", and (3) MA 10.5" 2 blade here on a 'normal weight' solo... (elsewhere there are tests showing the 3 blade MA is worse for efficiency).. The 2 blade MA's were best... The 11" was very close behind... The stock was 3rd (about 8% worse than the the others..
See Solo Props: APC, MA & Stock. Battle For Power..
My observation is that with a heavier batt pack the 11" props take the lead for me.. But I can't quantify by how much (not much really I suspect- maybe just a few Watts, translating into a few 10's of seconds extra flight time perhaps).. So it could be that MA 2-blade and APC 11" options are so similar efficiency wise (within 1%) it hardly makes any noticeable difference, allowing for experimental error etc. So then it comes done to preferred flying characteristics (smaller props = more nimble, larger props = more stable??)
Thanks, like a few others here, I am lugging around a Sony APS-C mirroless camera on my Solos. The 11" props may be a good choice to handle the weight. Will give both the MAS and the APC 11s a workout.