Variable or Fix Magnification Scope

Always pros and cons to scopes! Not to mention personal taste.
Naturally higher power give great vision at range however higher mag also (generally) give a narrower field of view. If you needed/wanted 9x or 40x to hunt it might be nice to start at a lower power making it easier to acquire a moving target due to wider field of view.
It is always nice to find some other folks in you area to check out what they have.
And naturally you really want an A/O scope due to airguns rather short (typical PB rifle scopes being paralexed at 50 &100 yards)and varying ranges.

 
You are correct in asserting that fixed power scopes are less vulnerable to recoil. However, in the past 10 – 15 years there have been improvements in manufacturing, resulting in better quality optics that are more reliable and have better light transmission. This has allowed variable power scopes to match the durability and performance of single power scopes. I’ve owned several variable power scopes that ranged in price from $60.00 to $450.00. I mounted them on a Weihrauch HW90 which kicks like the magnum air rifle that it is. None of these scopes ever failed me. The most compelling reason to purchase the variable power scope is versatility. It can be very useful at low power for those shots at close range or in very low light conditions. I took my first armadillo at 10:30pm by moonlight, at just under 10 yards. I set the scope on 3x, took the shot and smacked the armadillo just behind his left ear. He stopped, kibitzed and then took 2 steps before falling over dead. The variable power scope is then equally useful for those long range shots. It is generally accepted, that air guns have a 1” kill zone and that would be much more difficult to hit using a low power fixed scope at 35 - 50 yards.