OP,
Keep in mind there are drawbacks to every form of RV so find what works best in your situation.
Driveable RV - once set-up, you will not want to break down camp to drive for tourist activities or those items you forgot and need to run to the store for. Required in my mind is the added cost of a suitable toad and it's tow connection. Another downside is the ability to bring a toy like an ATV/SxS and also a toad? Doesn't work out so well unless you find a driveable toy hauler RV and can still tow a toad.
5th Wheel - You will require having a suitable truck to pull it and many will conclude that having too much truck is not an issue versus the opposite. 5ths are generally larger trailers and possibly more cost associated with the original purchase. Bed of truck is generally used up with the 5th hitch so if you have toys (kayaks, bikes, motorcycle/ATV) you will need to find an appropriate 5th to take them along --> toy hauler.
Travel trailer - Can use truck or SUV for towing completely dependent on the size/weight of the trailer. Again, don't assume any SUV can tow any trailer as there are many trailers, usually the more quality built also for more seasons, that are plenty heavy and I would not consider going with less than a 1-ton SRW truck or equal van for those heavy TTs. You will have the bed of the truck for usage but be very careful how much you are loading in the truck and truck bed as that counts against your available payload... this is the same for both TT and 5th. Less storage and difficulty fine-tuning the hitch is generally accepted as a downside to a TT. There are smaller, lightweight TTs that can be pulled with smaller SUVs/trucks and then there are teardrops too.
Truck Camper (TC) - Generally need a 1-ton and possibly dually as a lot of the nicer TCs with slideouts are VERY heavy campers. Less space inside so a little more cramped and would not be something I would consider with more than me and my wife. There are families that do TCs, but it is not my preference of camper style for my family of four. However, once the kids leave the nest, I'm selling my TT and buying a nice TC which also means I will need to upgrade to a DRW truck. Advantages are you can go into more remote areas and tow an additional trailer with toys and still have the ability to back up the trailer.
Certainly, these are not all the pluses/minuses of each general type and these are generalities to give you an idea of the downsides of each. Keep reading on this forum to give you better ideas of what those who own RVs are doing. It may become confusing at first, but over time you will start to get better ideas of what might be best for you.
I know there are many who believe buying your first RV will be short term until you want to go bigger and that does happen a lot. I, however, have a 30 foot point-to-bumper TT and tow it with a 1-ton modern diesel in the CO mountains. My TT is GVWR at 9500 lbs and many will say my 1-ton diesel is not needed. But, I like to load my 800 lbs ATV into my truck bed and tow my trailer out further into the CO mountains or Moab so a 1-ton makes perfect sense. But, I would like to get into more remote areas of CO where towing my TT is just too big. I will be downsizing to a TC once the kids go off to college. Point is, think through what you ultimately would like to do in your RV excursions and then start planning from there.
