IMO reliability should be high on your priority list. A popular chainring for hybrid bikes is the 46/30 for both compatability and a wide gear range.
The 30/42 combo gets you down to under 20 gear inches. Thats about 5.6 kph at 60 rpm ...walking speed. Unless you are touring with a BIG load, or climbing insainly challenging hills every day, thats plenty low enough for a hybrid bike.
On the other end you'll get 35 kph at a reasonable cadance at 75 rpm and still have another higher gear left.
Last edited by xroadcharlie; 06-15-22 at 08:43 AM.