Don't know about the Sennheiser but the Sony MDR-7506 is too bright sounding to me and I stopped using it.

Ath-m50

I have both the Sony MDR7506 and ATH-M50's
Sony's are definitely bright and fatiguing...the ATH-M50's have a much smoother sound especially better in the bass response and pretty darn comfortable and good isolation....I love using them to listen to mixes and general tune listening....I've seen them being used in studio's for tracking more and more lately...I'm pretty sure you will find many good reviews....
Don't know about the Senn's....never owned any but should try some and see...

I own both. One pair of the 280s and two of the 7506, for exactly the purposes you describe.
There have been no complaints about either. Maybe I should start an exit poll?

I think the 280 has a little better iso, but a bit too much bump in the bottom end (then again, I ain't out there playing)... and I hate the telephone-style cord.
The 7506 is adequate. That's it.

I really don't think either is a "bad" choice.
I tend to give my 280s to the bassist, unless he/she is right by the drummer, then they get my EX-29s.
I have two pairs of those.
They're cheap, and don't sound fantastic, but they isolate well.
As I write this, I'm thinking you may want both, or all three? Or one or two plus the ATH-M50? Maybe none of the above?
I wish I had some better headphones all-around, but I am glad I have application-specific choices.

Some other things to consider is the space in which you record and what you record.
See above about choices - your situation will play a big role.
If at all possible, try some of them - preferably in a loud big box music gear store.

Hope that helps.

My engineers use the 280s, I prefer the M50s. You'll be happy with either. Never tried the Sonys.

I ve used the Sony's for years. The ATH-M50's are on my short list.

I'd like to echo the thought of having a couple different sets for differing positions in the recording field. Some serious iso's for bass and drums and something with decent mids for everyone else. Comfort is paramount as is quality. The HD280's are very good also.

Glad to know my thoughts and perceptions aren't completely unfounded, Dave - that's EXACTLY what I do.
+1 on the comfort. You're not going to get a great take if a performer is worried about the headphones pinching, the room being a little too warm, or whatever...

Ultrasone 450..99bucks and they ROCK

TheJackAttack, post: 345986 wrote: Ath-m50

Just got a pair of the ATH-M50's. I like them a lot. They seem very durable and have good Isolation. Plus they are very punchy sounding which will be good for tracking drums/bass. ( = Thanks!

You're welcome. They are also quite comfortable which is very important.

Love my ATH-M50's too...If I needed a bunch of headphones for tracking in a studio those would be the ones

i do have to say this about the Sony's, i have had 8 pair since 1998 and just now, after being used in a commercial studio environment, they are just now starting to have the earcup padding fall apart. BUT they are still working. all my sonys are now backups or extra's since becoming an Ultrasone endorser. Whats cool about the Ultrasone HFI-450 is that the earcup padding is replaceable!! on my Pro 900's i have replaceable earcups, wires and it comes with different wire with 1/4" and 1/8" connectors. they all sound amazing and are in no way ear fatiguing. the HFI-450 is the same price as the Sony 7506

We have four 280s and two 7506s - the Sony's get picked most often mainly for comfort. Both have great isolation but for long sessions we have one pair of ATH M50s and also a nice pair of AKGs.