How to restore my wallet? Is it better with the wallet file or seed?

[Yvon]

I invested a few months ago and have a big amount (for me, at least) in SC now.
Problem is that I've created the wallet in a Windows VPS.

I want to restore the wallet in a Linux laptop I have and move it to another wallet on the same laptop.
Since now it's a lot of money, I can't afford any mistakes that might make me lose all that.

If I chose in the current client version "Load a wallet from a seed", it will create a copy of the private keys, not sweep the funds to a new address, correct? So I could still use the seed on another computer if I needed to and recover my funds. Is that so?

Thanks.