best aluminum grade for cutting

[multiplex]

as i discovered with stainless, some grades cut better than others. In general the sheet stock grade (321 i believe?) left a pretty nasty edge compared to 304.

i have a job coming up in aluminum and i haven't cut that yet. What grade would you recommend? its going to be 1/8" sheeting.

choices being

1100
5052 (says easy to weld according to McMaster)
6061

[Edwardo]

I've cut 1/8th 5052 alum with decent edges and no dross, 1250 Hypertherm, fine cut consumables @40 amp, 79 arc voltage, 145 ipm...

EDD