I dont think you can go wrong with either model. I just grabbed the 1rbtmk2 today and i'm very impressed with it. For AU$280 I think they'd be a good deal if they were only wired but throw in bluetooth and they become great. Comfort level is off the chart, i have a big head and ears and the fit is amazing, it really puts my more expensive headphones to shame. Sound quality via bluetooth is excellent, bass has a good kick to it, i don't really find them lacking in sub bass like a lot of reviews claim. Mids are vey nice with vocals a little bit forward sounding and the highs are set in just the right spot for laid back, fatigue free listening. Soundstage is also quite good, music sounds quite open and spacious for a closed back.
Overall a very comfortable headphone which is engaging and very easy to listen to. Bluetooth reception is also very good, my house has concrete walls and i had no trouble walking around my house while streaming from my Z3 compact with aptx enabled.