I've gone through a ton of cabs (check my profile). Once I got my avatar 4x10, I never looked back and haven't sold/traded cabs in like 5 years. That's compared to the pre-avatar days when I had a new cab every 2-3 months
I bought my Avatar 4X10 about three years ago and have loved it every since. Clean, clear tone with more than enough powerhandling. They truly are great cabs. The lower port moves a substantial amount of air. You won't be dissappointed.
Can't speak for the 410s but I own a 212 Neo that sounds amazing. I really like what the guys at Avatar are doing, for the price they're awesome cabs. Plus they operate out of my home state which is pretty awesome as well.
Fuzzrocious Club #92: Terror, RK, BDPG, Grey Stache