Winnebago has many options. They've been around forever, and have the experience building everything, and are at or ahead of the curve when it comes to standard equipment. They also know how to build them lighter on the MB Sprinter cutaway cab chassis, so that the chassis isn't as overloaded as those of some other upfitters.
I've committed to a 2018 Navion 24V. Not as much OCCC as a similar unit built on a Ford E350/E450 chassis, but I've tried the slightly larger version of the Ford chassis, and more particularly the 6.8L V10 engine and drive train, and it wasn't for us. More raw torque and power, but less fuel economy than the MB 3.0L V6 diesel, and noisy, and the doghouse was a pita.
Try their website and have a look. They post the MSRP for what they sell on their website, but you might be able to find significant discounts, depending on what you want, and where you go to buy it.
All just my opinions based on some experience.