If you've never flown any A320s before, you might want to start with the Aerosoft as it's a lighter simulation, as erick said. However, the FSLabs is way more complete, and it's definitely the best A320 on the market right now, with its complexity and realism. As said before also, you can experience a big fps drop when into the VC of the FSLabs, but trust me, it's worth it!