Semi auto.
My favorites in order.
1. Ruger MKII built like a tank, reliable, good quality for the price, accurate. The only negative is the grip angle and non-adjustable sights (on mine).
2. Colt Ace, trigger it's like ball bearings on glass (read that recently in an article in NRA mag and it’s a very good description). Absolute dead on tack driver. Negatives weight and price, but once you own one you will never sell it.
3. Walther P22. Inexpensive, extremely reliable (for me anyway) light and just a ball to shoot. Negatives, metal quality used in construction???? Ask me after I have 10,000 rounds through it, I’m at about 3000 now.