Hi guys,
I'm soon to be moving house and into an apartment, and so the 2nd bedroom will become my 'studio' so to speak. However, this means i'm very limited in terms of volume levels coming out of my monitors

and I dont want to upset all the neighbours lol.
At the moment I have Behringer Truth 20301A monitors in my converted garage. i have to crank these up quite high in order to get any clarity/sound distinctions from them. As this will no longer be possible, i'm looking at other options, namely an excellent pair of headphones to do most of the work on, and a smaller but clearer pair of monitors to use at times when least likely to disturb the neighbours!
I'm considering Sennheiser HD650 headphones and Adam A5 monitors. I've just sold my CDJs on ebay (thankyou Pioneer for hiking the RRPs up lol) so am willing to spend this in whatever way will help me most. Also, as i'll only be renting the apartment, I cant really make any room modifications.
I've done loads of online research but haven't listened to anything myself yet. I saw that Sven recommended Beyer 770pros, would the HD650s be much of an improvement on these?
Apologies for the long essay! would like to hear any advice and suggestions,
Paul