Great value for money but there are some pitfalls. First, it's a much better frame than the S500. If you need additional stroke, you can install additional motors on the bottom mounting plate and in the X8 configuration. The only problem I have and why I can't say I like it is that it doesn't have space for a suspension and a big battery. I have a 5300mah S3 and a 2 axis gimbal and when mounted they bump into each other which disables the center of gravity. They should be a battery above the stabilizer. However, if you don't install a gimbal, this frame is amazing. Mounts can only support 22mm or 30mm motors. As you get bigger you will need to upgrade the mounts, which you can do by purchasing Tarot Motor Mounts. You definitely want to use pixhawk4 for this setup. I also like the ability to have a 4-in-1 full-size speed controller and video transmitter. There are mounting holes for 30*30 stacks. I don't think it's a good idea to use separate ESCs on this frame. Overall it's amazing value for money, but if you can afford it I'd go with the Tarot 650 Pro.