There are tons of new quests, player abilities, new areas to explore and new pvming bosses. Btw yes RS3 is much more of a pvm sport than pvp. Because nobody wants to risk so regrettably pvp in this game is rather dead. I'd recommend OSRS, if nostalgia or pvp content is what youre looking to escape the experience. If however, you're open to the newest changes in cheap OSRS Gold this game or if u elaborate lore, updated/modernized gameplay vs the notorious old runescape ability beats then RS3 is Runescape for one to remain.
If you really enjoy the PVP and the nostalgic feel of this 2007 style Runescape system, I would say go with OSRS. If PVM and quests are more significant for you and you like the EOC system, I'd say RS3 might be the better option for you. You can also swap into the heritage system in RS3. I swap when I get tired of play and RS3 OSRS and then I continue playing RS3, if that gets boring. People who argue to be exceptional are delusional. They waste time but in the end of the day, everyone constantly will have their own tastes and opinions. Don't get sucked into it and play any variation of Runescape, so that you can decide for yourself, which variant you prefer.
The upside, is RS3 has going for it up to endgame goes, and the street getting there is much smoother compared to old school rs. Microtransactions have entered Runescape as you can essentially purchase your way to 99/120 in this way that trivializes training abilities. If microtransactions receive your platelegs / skirt in a spin, you could always play with Ironman mode where there's no choice for buying your way to a 99, but you also can't trade players. Overall the sole reason I do not play with school, is because I've sunk nearly 10,000 hours in this match today. I really don't feel like doing it just for the nostalgia.
Take a look at 2007 Runescape - your accounts progress will still be on runescape 3 though, you can perform a variation from back in the afternoon (with a lot of added updates by now, however same core gamplay and images ) everyone made a new start on 2007scape servers. This would be the runescape how you recall it, if you're looking for engaging pve content I'd totally have a look at RS3.
Why The Chosen Commander is arguably the best pursuit in RuneScape
I had the honour of re-playing some quests within DXP weekend largely for better agility coaching, and I chose to do the Throne Room for a while I recall it being among my favourite Agility training spots believe it or not. I had yet to do the pursuit. I realized why I hadn't. I have a weird attachment obviously, Zanik is my favourite character that says a lot since Guthix is a complete Boss dude, and I would still roll with Zanik prior to cheap Runescape gold him. I had started a number of the quests, but it was The Chosen Commander quest that nearly made me cry again just like it did years ago.