When it comes to small planes, weight matters. Don't be surprised when your contact emails you for all passenger weights, and when the pilot organizes seating by weights. (You don't want the three biggest people on the right side, for instance.) Similarly, don't expect to bring two weeks of stuff for a weekend, and definitely mention if you're planning on bringing golf clubs or skis. If they don't fit, check out ShipSticks or LuggageForward, which sends your equipment beforehand for a relatively small fee.
My experience with Stratos has been very good since I started booking jets several years ago. Joel and his team provide excellent service and followup at every stage. We recently had a flight where the incoming plane had a mechanical and they were able to replace it with a comparable one within just a few hours. Our original take off time was only missed by less than a half hour. The Stratos team communicated with us all along the way and everything was fine. The pilots are very good at what they do and the ground organization is thorough and efficient. I would recommend them to a friend.
After your initial enquiry you will be assigned a personal charter expert who will send you a selection of quotes for you to choose from. Each quote will have a clear breakdown of aircrafts and airports and reasons they have been selected for you. Should you wish to go ahead they will then book the aircraft and send you all the flight details including directions to the terminal and any other important information. They will be your first point of call for any further enquiries you may have up to the flight and, if possible, they will meet you at the terminal. From your initial quote you will be able to contact your account manager 24/7 (if on holiday you will be assigned another account manager to cover) so you can call from wherever, whenever you like.