First, quality is quality. A good quality interface will have not just good pre-amps, but also good DAC and ADCs, good quality headphone amps, etc...
Having said that. We're talking home recording here. If you're lucky enough to be able to budget a $1000 tube pre for your microphone, it's likely to do a lot more for your sound than ramping your 2i2 up to an Apogee, Rane or other high-end interface (not that those wouldn't hurt as they have pretty high quality pre's).
Bottom line, they will do the same job, but your converters and hp amps will be the same quality they were.
Which interface and which pre-amp are we talking? Maybe there are some here that have experience with them and can advise.