The Focusrite stuff is the low end bargain product. They are good if you want to spend less than $250, but do not match the upper end.
Many people have had excellent results using the RME ADI-2 Pro FS. This is normally $2k, but there's a used one on ebay right now for $1299. I would jump on that if you are really serious. It also provides ability to record into DSD files (which is the preferred method for recording analog/vinyl if you don't have to do mixing/processing).
A good linear power supply may improve the sound quality captured even more. The ADI can accept a DC power anywhere from 9V to 15V (I would probably use 12V). There is a used Keces P3 on usaudiomart for $320 that would do this job. You can try a Teradak on ebay for less than $200 as well (this will still likely be better than the stock switching power supply). A Teddy Pardo will be at least $400 (but they are very excellent as well).
Many people have had excellent results using the RME ADI-2 Pro FS. This is normally $2k, but there's a used one on ebay right now for $1299. I would jump on that if you are really serious. It also provides ability to record into DSD files (which is the preferred method for recording analog/vinyl if you don't have to do mixing/processing).
A good linear power supply may improve the sound quality captured even more. The ADI can accept a DC power anywhere from 9V to 15V (I would probably use 12V). There is a used Keces P3 on usaudiomart for $320 that would do this job. You can try a Teradak on ebay for less than $200 as well (this will still likely be better than the stock switching power supply). A Teddy Pardo will be at least $400 (but they are very excellent as well).