You can’t answer the “wut is better” about a railpass without an exact itinerary and a lot of research. We need additional information to give any recommendation: How long is your trip? How old are you? What countries are you likely to be traveling through? How many cities will you visit and/or how long do you plan to dedicate to each city?

give us an itinerary. flying might be good too but without a route, it is hard to know

If you have 4 people, renting a car or van is definitey an option (Peugot and Renault both do buy back leases that helps you to avoid the VAT tax which is aplied to regular vehicle rentals)