Hey Aaron, The Manto A4 will likely be a bit longer in the sleeves and pants than your Atama A4. If anything, Mantos run a little bigger than normal so if you're normally right in between sizes, go down a size. For example I'm 6'1" 175 lbs and usually an A2 is a tiny bit short in the sleeves/pants however my Manto A2 fits like a charm.

We had the A2, but they all sold out earlier :(

I hear that Mantos are somewhat long/baggy. I'm 5/8" 165lbs with a muscular frame (no brag), could I get away with an A1?

similar question as Zak, I'm 185lbs, 5'8, big shoulders/chest. Is A2 OK?

They are definitely a little bigger than your average Gi.

Zak, I'd suggest an A1 for you. My buddy is 5'10" 160 lbs and he wears an A1.

Pat, it's a tough call because Manto's A2 will most likely be a good fit for you, though the sleeves could be a tad too long before washing. A1 sleeves are probably a better match but the chest room will probably restrict your movement if you've got wide shoulders/chest. I think an A2 would work best for you.