I have found much the same with my pistols over the years.

The Centre and the LP53 are the most repeatably accurate guns I have ever owned, single handed.

My Webleys have much bigger groups and my old HW45 (now deceased!) was better than the Webs but not as good as the Gamo.

So for me it's the LP53 first, then Gamo as backup.

Love to try a spring Feinwerkbau or an Original someday.