Basis Audio Super Arm 9

Hi gang, 

Randy from Optimal enchantment is coming over tomorrow to install my Superarm 9 (I currently have the vector 4 on a 2200 signature with Lyra Etna).  For all you superarm owners, do you have a cartridge recommendation?  The Etna is a wonderful cartridge with incredible mid range but there are cartridges with sweeter highs and richer lows out there (like the Lyra Atlas). Wondering what you guys are using and if you have recommends as I'm about to my SA 9 adventure. Thanks in advance!

Thanks, Pops, I'm certainly excited to say the least.  Although it's definitely a grip of coin, I'm confident that it's the best next upgrade especially since I have a Basis turntable.  I currently have an Audio Reasearch SP20 pre but will be moving to the Ref 10 soon.

Thanks, jwm - I know my question is rather subjective (like asking what cheese goes with this particular wine) since there are so many grand cartridge options out there these days.  Hearing from folks that have the superarm 9 on a Basis turntable and hearing why helps me hone the thoughts a bit.  Much appreciated.