I bought TF10's for the same reason that you are attracted to - discounted price.
Unfortunately i was rather disappointed with actual performance of them.
For me the mids were somewhat recessed, highs too shrilly but bass was quite nice. The soundstage is not on the big side & this combined with poor imaging/separation it felt like sound was being channelled into my ears through narrow straws - just my impression of them. They are sitting unused & I have not got round to selling them.
If your prefferred music genre leans towards EDM (trance, electro, drum, dub etc) Rap Hip-Hop, Pop & classic rock i can highly reccommnend Yamaha EPH-100 (£80 UK). If its
strongly towards classical or Jazz than maybe something else. Let me know what you will listen to mostly.
EPH100 has the best fit/isolation out of all dynamic driver phones, big punchy bass, warm mids & measured treble that has clear details without fatiguing your ears with shrills. Best of all it has superb separation that really shines with EDM giving you a virtual 3D like immersion. There is a good active
thread on the Yamaha EPH-100 that you can take a look at for more info.
Don't get the TF10's because of its discounted price. They might have been great few years back but things have moved on.