Welcome cino...
Well, when It comes to performance, I think most models are not far from each other... engine types are similar (GY6 variant) with most models... some are fuel injected, some are not. In choosing a model, I think you may consider what looks great on you...or what looks great with you on...
1. Kymco Like - retro design... if you like the Vespa, Stella, or Italian design, this is for you...
2. Kymco People - another retro design...
2. Kymco Super 8 - sporty design... if you like a sport bike style, this is for you...
3. Kymco Agility - sporty design but with smaller wheels compared to the Super 8
4. Kymco Yager - bigger than the above