Yes, test drive or rent both cars for a day to figure out which one you like better. As for: can i drive an Elise for more than 2 hours or go on road trips..for me the answer is yes. I usually go on a long distance road trip with the Elise and my wife as a passenger, minimum once a year to several times a year. Long distance to me is about 3000-6000 miles roundtrip within 1-2 weeks. Never had a problem (knock on wood) and I would drive about 6-10 hours a day. With that car, its hard to even drone or doze off if you can find any mountain or valley roads to take. If you take a freeway..its possible to drone out, but because it doesnt have cruise control, you wont be droning too much. And with its small tank (right around 10 gallons max - that includes the emergency tank), you would have to find a gas station every 200-250 miles to be safe.
There is a lotus owner by the name of Leadfoot Linda who did a 8000-10,000 miles road trip that took her a month, but she practically took every mountain/curve road across the country..and she had a blast. If she can do it, we all can do it.
Good luck in finding your car.