Rs3 on the other hand has mtx, slower upgrades, stagnant RuneScape player count, and is harder to RS gold get into with the interfaces and layouts you have to figure out, but after that’s passed RuneScape game has much quicker xp rates in comparison with osrs, but nevertheless takes hours to achieve particular levels, the battle is similar to other mmos, being keybinds and abilities and so on, bosses are diverse and engaging for mid-high degree RuneScape gamers, pvp is mostly dead however, also has more skills and quests to explore.
Both games have a mode named Ironman, this gives you the limitation of not being able to exchange with other RuneScape players, which means that you have to find everything yourself, and no access to MTX, to allow a match like osrs where it takes you so long to get amounts, limiting yourself makes it require much longer which in my view, unless you have a lot and I mean a good deal of spare time, osrs is better as a normal account. Rs3 has considerably quicker leveling system as stated before, as well as indirect MTX with items like silver hawk boots makes training agility (one of those slower abilities ) to a joke, literally wearing those boots give you 99 by not even training the ability.
Which is why in my estimation, rs3 is better performed as an Ironman, of course it might be better to begin as a normal account to learn everything first and maybe make enough money to pay for membership with in game gp. At the end of the day however you’re the person who determines what you like and the two games have a free to perform option available so try out both, set a goal of completing 10 free to play with runescape 2007 gold quests or something and watch which you liked better.