Decided -not- to sell the Grados anymore until I can afford a Grado upgrade. The Grado sound is really unique, so I guess they're worth keeping. After more listening, it's pretty easy to tell that the DT880 is balanced and has something similar to the Grado's level of mid-range transparency but applied to the entire sound spectrum. The Grados add a fun amount of color to most music though, which is why I'm keeping them for now 
Re: The HD448 bass, you actually prefer sabog bass? I think the term would be flabby or boomy
Reviews said the HD448 soundstage has depth, but not width. I think it's like that with most closed cans. How are the mids compared to the SR60? Are they aggressive and forward as well? What genres do you think would be fitting for those cans?
Anyway, please bring them to the next RR meet, interested in trying these out
Oh and I got Denon AH-D1001s recently but I'm still going to mod them
They sound great though! IMO, best value for money under $99 thus far.
Also got a Little Dot MK1+ portable amp, and a SuperPro707 DAC with digital in and RCA outs. Been a bit lazy to write about the new acquisitions though
My target portable atm is the Senn HD-25 1-II. Full-sized is probably the ATH-AD2000.
I also need a good headphone amp.

Re: The HD448 bass, you actually prefer sabog bass? I think the term would be flabby or boomy

Anyway, please bring them to the next RR meet, interested in trying these out

Oh and I got Denon AH-D1001s recently but I'm still going to mod them

Also got a Little Dot MK1+ portable amp, and a SuperPro707 DAC with digital in and RCA outs. Been a bit lazy to write about the new acquisitions though

My target portable atm is the Senn HD-25 1-II. Full-sized is probably the ATH-AD2000.
I also need a good headphone amp.