I prefer the faster access and write speed on my computer across all my applications too AS WELL AS faster direct-attached backups.
The backup for my backups reside on NAS and run while I'm asleep and here speed is a non-issue. And then there are backups of my NAS to external USB HDD which is also slow but doesn't matter.
I have multiple tiers of backups and it varies depending on the computer. We have 4 of them that are in regular use.
In general, everything is on a coordinated and automated schedule so they don't 'collide'
