Just depends.....
Like everything else in disc golf , there are many factors that will play a part in what works for each individual. Age, physical condition, last time you tried to throw a frisbee......
That being said, a Leo is not a bad place to start and has plenty of potential for growth and shot shaping. I found I preferred the cheetah over the Leo as it was easier to keep from turning all the way over. Any of innova a speed six stuff (other brands in same speed also if your a innova hater)is good . I currently carry a gstar Leo and finding it very reliable for around 300 ft. My s shot disc around that distance and don't have throw it max power to get the flights I want. It's still fresh and can count it to flex out to hyzer Finnish every time.
If your an absolute newb and can't get anything straight for any amount of time ..... I have two favorites that I fell in love with early in my dg adventures. First throw I ever got a full flight with, and got me hooked the game, was with a stingray. Flipped up from my beginner hyzer release and got on a glide ,slowly tracking to the right , and never hyzered out of its flight. Yes, a stingray is mid range, but was considered a distance driver when it was created. Tough to keep it from turning over on full pulls now, but good for up to 300 IMO. First ace with a ray and still bag my original ray for easy turn over midrange shots around 250 ish.
Last but not least....gotta give a little flyer maximizer a try. The ultimate beginner fairway for people throwing under 300. Yes it under stable , but will add distance for anyone throwing under 300. I still bag a maximizer and have about 12 back ups. I have out drove many players ,throwing drivers that are too fast for them, with this disc and always get comments on the flight of this disc. Can get a little touchy much past 300, but hyzer flips into a laser for below average arms and glides for days. Adds fun factor for beginners.