I definitely know what you mean with regards to the curiosity thing. There were two reasons I picked the MS HD over the other models at a lower price point, one it supports 196kHz sample rate which is really unnecessary in my book but I like the support for it. The other reason is that it has XLR balanced outputs on it, with my current setup that doesn't do me any good, however on of my jobs is as a Theatrical Technician so having a bus powered balanced external DAC that is portable and driverless cross platform with full scale balanced output is great for me.
The MS HD is silent and has great sound quality, it's right at the price point of the Bifrost USB but doesn't require external power and has USB, does that mean it's better? No, it's just the unit that works well for me mostly due to size.
If you're itching to try something new give it a shot, maybe consider saving up for an even higher end DAC, though most high end reviewers claim the MS HD is as good or better than DACs upwards of $5k or more. (Though some claim that performance requires a USB power supply $100-200 to achieve, which I don't believe.)