Is there anything with more room for the driver?
Yes. I drove the polaris’ and Honda when purchasing mine and I loved the Can Am Defender HD10. More room and quieter than the Polaris. Always been a Honda guy but just couldn’t warm up to the Honda Pioneer 1000.
The Yamaha Viking has even more room but there’s only 1 engine size offered and it’s a 700 cc. GLWP
If you're not looking to fly down trails like a snowmobile, that 700 has proved itself over and over again. It's a great engine and mainly why I bought my 2016 Wolverine. They started making a 4 seater Wolverine last year with an 850cc in it. It's ugly. Like a Pioneer. Gonna need to give that one a few redesigns and cosmetic upgrades before I'll think about it.
I will need to see a few years on that new 850. The 700 is a proven design after many years.