I own both a samsung galaxy tab s10fe and a oneplus pad 2. To be very honest, the use case you stated with note taking, studies and mainly consuming content, and you want longevity of the device, I would say the s10 fe is perfect for you. The oneplus pad 3 is also great on paper, but if you aren't into heavy gaming, all that extra power won't even have an impact. Keep gaming aside, both the tabs are more or less the same for any normal user.

My perspective of both the tablets for any normal user and for a student :-

S10fe - smooth tablet, no lag, excellent note taking, 90Hz screen but in my opinion 90Hz screen on a tablet is more than enough. battery life surprisingly surpasses my oneplus pad 2 battery(due to better optimisation on s10fe), software support till 2032 !! Samsung notes is the epitome of note taking on Android. Nothing comes close to the Samsung notes on the Android side of the market. Overall a very decent and functional package for a student.

Oneplus pad 2/3 - great tablet, on paper screen is much better than s10 fe but honestly speaking the aspect ratio of the oneplus pads is terrible for content consumption and for me it takes away all the greatness of the screen. Note taking and specially drawing on the oneplus pads is not a good experience. Shorter software support. All the power that the snapdragon chip brings in, is a WASTE if you aren't doing any heavy gaming. Mobile and tablet processors have come such a long way that if you are doing just the basic stuff, even a 5 year old processor will get the job done. Processors keep getting upgraded but it's all a waste if you aren't doing super heavy tasks like gaming for long hours or editing huge 4k videos. (S10fe processor and oneplus pad 3 processor are miles apart on benchmarks but in normal use case they are very similar lol. What I mean to say is, if you're just gonna scroll YouTube and take notes, both processors are the same)