Why the open back? For open backed headphones I'd jump to the HD600/650 tier before settling for anything less [these can be found for as little as I paid, ~$280]. In the sub-$200 range I'd opt for any number of makes/models. Beyerdynamics has some great stuff, closed and open. The ATH-M50s I use for tracking and casual listening are awesome for the price (slightly bass heavy, but that's what I like in casual listening so win-win for me). I recently spent significant time trying everything Guitar Center had, in addition to years of my own headphone ownership and use.
My ears tell me these are the best sub-$200 headphones available:
ATH-M50x Professional Monitor Headphones || Audio-Technica US
Budget minded but very good (highs are slightly harsh IMO, which can be EQ'd out if undesirable):
Beyerdynamic DT 770 PRO Reference Studio Headphones - Closed | Sweetwater.com
And you really can't beat the HD280 pros for $99. No other headphone for $99 comes close. But you do get superior clarity for just a bit more money in the above models.
I had a pair of Shure something or others (in same price range as being discussed) and the response was waaaay too flat and lifeless for my tastes. Again, if I want flat and accurate then I know it's necessary to step up to the next grade/tier of headphones. What I look for in the price range you're shopping is utilitarian - something I can use for tracking/most audio work and casually enjoy. Monitors and high end headphones are needed for proper mixing/mastering, but tend to not be my favorite sounding for all day use. Too bright and/or too flat. Let your ears be your guide. Your best bet is to go to a music store and try on some pairs. Fit is also something to consider if you plan on wearing them for hours. I found all the models mentioned above to be comfortable.
Keep in mind the Schiit only handles up to 75 ohms, so any larger headphones may require a beefier headphone amp. The ATHM50 would be fine at 38ohm, but the Beyerdynamics are 250ohm and other larger headphones wouldn't be as loud/punchy as they could be with a stronger amp. I'm using a
Presonus HP4 which supports up to 600ohm headphones.