Get the Rail!
I didn’t like the suspension on the hire levo I had – Fox Rhythym. Maybe the more expensive ones are better with Fox Elite. Much preferred the Rockshox on the base models. Also not a fan of mixed wheel sizes!
However the majority of the ebikes in the same price band come with the same components and ride similarly – it just depends what motor you prefer and if you have a local dealer to fix any problems.
I hired a Lapierre Overvolt (mixed wheel size) to get to the top of Skiddaw a few weeks back – really good fun if I’m honest and was able to cycle the majority of the uphill – something I couldn’t do on my normal bike.