If you can beat the primals get Elder Staff. Crit and DET combo is HOT FIYA. I didnt get it b/c I had Zenith already from pre 2.1 since it was my main for a good while. Plus in about a month with 2.2 u can just go crazy and farm allagan i90 or get myth whichever you think looks better! (or if main looks better and meets acc for coil t6-9).