I think that’s a really good idea (renting one for a week)
I can’t help with either of those models.
Can you have an initial try to see which one suits you best?
Will you be putting the scooter in the car yourself?
I have a Pride Elite Traveller Sport. It’s quite robust and can go most places but I couldn’t get it into the car myself.
Prior to that I had a Pride Elite Go-Go Traveller 4. It was a good, reliable scooter. It couldn’t handle some terrain, which the Sport can, but it was much smaller and lighter and therefore easier to get in the car. I could do it once but not more recently.
Scooters vary but they all do basically the same job. I think you need to consider where you are likely to use it (terrain) and how easy it is to get in the car.