Full time fifth wheel Insulation confusion

Hi all. I'm looking to full time in a fifth wheel. I'm a one man show, looking to downsize and travel domestically for a few years.

I'm having a terrible time figuring out how to choose a fifth wheel.

I found my way to the Keystone Montana, which gets good reviews for overall quality. However there are zero comparison websites that show equivalent Forest River or other brand models.

I'm looking for a model with insulation that will help the summer and winter months.

Any full timers out there that can point me towards a specific model or two?

If but a model, then insulation tips to beef up a regular unit?

Thanks