Side opening autos are better choice in my experience.
I have few cheap ones 3 side & 1 OTF.
OTF is cheap Taiwan/chinese made ? All its good for is slashing, after one stab into cardboard box it stopped locking blade open.
I took it apart to fix it and it turns out it has 2 thin pieces of soft springy flat metal on each end of handle that locks it in open or closed position.
They got both bent from impact against cardboard WTF!?!? not good for stabbing at all.
The only good thing about this OTF is ability to take it apart after it breaks to fix it.
I also have 3 classic Italian switchblades made infamous by Hollywood

They great for stabbing thin narrow blades, ok for slashing.
Negative, 1 INOX has broken safety lock lever, it doesn't keep blade locked in closed position. ( inherited from my late grandfather may he RIP)
It POPs open in your pocket or hand without any warning, very dangerous I only keep it as sentimental keepsake in my desk.
1 Rosteferi ?identical model is also dangerous because back spring on that one is even stronger, more than once knife has jumped out of my hand and fell to ground during opening, and few times blade failed to lock open and bounce back onto my fingers, got bitten.
Another negative these old side opening switchblades have pinned handles so there is no way to take them apart to fix easily.
That is why I'm not fan of autos any longer, maybe that would change if I had high quality one but I don't right now.
Besides my ZTs flippers open just as quickly as auto's but much safer without fear of blade bouncing back on my fingers!
IME autos are cool but totally impractical as daily users.