Bissell wet pet care vacuums

Hi everyone! I have a senior dog who is having more accidents (both urine and feces) and I think this is the new normal for her. She is aprox 14-15 years old and I'm pretty sure she's experiencing ccd. I know our time together is coming to end sooner rather than later.

Anyway, I recently rented a commercial Bissell to clean the rugs. I'm thinking I need to invest in my own. I was looking at the smaller version of the big green machine and then they have a couple brands that specify they're for pets. Does anyone know if they're truly better than the regular little green machine? If they're pretty much the same, I can save a few bucks.

Also, if anyone has any recs on other brands, that would also be helpful and open to that.

Thanks.