Here is the good news and the bad news.
For those looking to own a physical copy, several remastered versions are available: 2016 Deluxe Edition (2CD) phil collins but seriously full album zip upd better
The demand for an version is a direct reaction to these low-quality, incomplete packs. Here is the good news and the bad news
If you must have a ZIP file from a forum, look for the version ripped from the Platinum Collection (2004). Those masters are cleaner than the 1989 original CD. Those masters are cleaner than the 1989 original CD
It is also important to note the historical significance of the album. It was the final studio album to be digitally recorded on the Sony PCM-3324, a format that defined the sound of the 1980s. As such, ...But Seriously acts as a capstone to the decade of excess. It takes the technological precision of the 80s and applies it to themes that would become more prevalent in the 90s: social conscience, emotional vulnerability, and global awareness. In this sense, the album is "better" than its predecessors not just in quality, but in scope; it is a record that looks outward as often as it looks inward.