Joined: Mar 2014
Posts: 18,221
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From: ,location, location
Bikes: Foundry Chilkoot Ti W/Ultegra Di2, Salsa Timberjack Ti, Cinelli Mash Work RandoCross Fun Time Machine, 1x9 XT Parts Hybrid, Co-Motion Cascadia, Specialized Langster, Phil Wood Apple VeloXS Frame (w/DA 7400), R+M Supercharger2 Rohloff, Habanero Ti 26
You should go for the gearing that works best for you and your bike. Since you provided us with really no useful info we can only guess.
This has zero bearing on whatever your bike might be but my 1x hybrid is a 38t 11-32 9 speed and my mountain bike is 30t 11-46 but that is my personal gearing and may not work for you and your mystery bike. Plus in the end 1x9 is not my favorite but I didn't have any 11 speed parts when I built it and still don't have anything in my parts bin and if I did it would likely be a slight downgrade, from a bombproof XT rear derailleur and XTR 9 speed shifter, in a sense but the new 11 and 12 speed stuff is great.