Welcome to the dāgoogled world. Based on your criteria of āa lotā of storage/price, Word/Excel need, ease of use and transferring,
Iād recommend Koofr:
Depending of what āa lotā means, they offer a 1TB lifetime plan, which is available for $199, with promo code as little as $129 on StackSocial. Thatās less than 1y of Murena.
Koofr uses MS Office for the Web, so you can view/edit files from the Drive.
One neat feature of Koofr is that they allow you to link your GoogleDrive (Dropbox, MS OneDrive) to your account. Once you do, itās very easy to transfer files. You can manage all of them from one interface, so you can take your time transferring everything or even use them in parallel.
If you are moving to an e/os phone, I found it also helpful that Koofr has regular storage, which allows you to do the phone backup to Koofr (via Seedvault/WebDAV). Other open-source apps/services also often use WebDAV, so that makes it a lot easier. You can also manage your media upload (photo/videos) via the app.
In addition, similar to Murena, Koofr has a āvaultā for end-to-end encrypted storage, so you decide what needs additional security.
Alternatives, that I also like and use are:
ProtonDrive - they offer a whole eco system, including Mail, Password manager, VPN, Wallet, Meet. They also have their own docs/sheets integrated. Itās fully encrypted e2e, so very secure, but you canāt use WebDAV or other open source tools to access it, only through the Proton Apps/Tools. Youād have to use Google Takeout to download all your files, than upload it manually, so a bigger effort. If you have less than 500GB of files, their Unlimited plan offers all of the tools + 500GB for an annual price of ā¬119.
pCloud - secure storage, lifetime plan for 2TB is ā¬399, encrypted storage has a separate lifetime plan/cost. Annual plans also available. They have a migration tool, so you can transfer everything in one go directly Google Drive, without having to go through your laptop.
I didnāt go with Murena after the experience with a 6month downtime. While the data was eventually recovered, not having access for 6 months and everything being out of sync was not really acceptable, especially if you use it as your main storage and for your job. Sadly, there was never a post-mortem to make customers comfortable why/how this will never happen again.
If you do go with Murena, you could consider a cheaper, lifetime plan from FolderFort, Internxt or Koofr to sublement it for high volume stuff, backup, archive, etcā¦
If you are having challenges with the transfer, you can also consider MultCloud to move things over.