Synology Drive Vs Resilio for on the go sync/browsing of folders & files on my NAS?

Had my NAS for a while and just finally starting to move on from Photos/Plex and get settled in with daily productivity setups.

At home with the NAS, I usually browse it's folders via logging in via macOS Finder. However, when I'm on the road on my laptop or even sometimes on my phone I want to get functionality of:

* browsing folders & files * being able to "pin" local copies to the local device * if browsing PDF or images, thumbnail previews would be nice

The obvious solution is Synology Drive, though I've heard it can be a little unreliable at times and with the latest moves by Synology, I'm a little concerned about future support. One plus in it's favor is that if I'm away from my computer, I could still log in through Drive or File Station portals (assuming I can get on Tailscale).

Resilio seems like a pretty solid option and I've used it a bit for machine-to-machine syncing in the past and it seems very robust in a lot of network situations, but I'm not sure how well browsing or editing non-locally synced files works (or if that's even a thing). A minus would be that it needs to be installed on a device, though it's so rare I'm not in possession of one of my devices that doesn't seem like a huge consideration.

What are people here relying on these days for their situations of reducing reliance on Dropbox/GDrive/etc?

(Sorry if this is a little noobish, tried searching but not a lot of talk of Resilio in this context.)

Thanks!