They are really different headphones.  For me, dt880 provides more details and better bass, though 600 gives more bass

Thx a lot.   I got a spl auditor eventually, working great with my 600

totally a collection of legends~

Since you dont like C3, there is no point keeping it. It can be quite annoyed with button problems   amp? i dont know C3 has a lineout or not. If not, dont buy amp for C3   PS: I dont like C4 either. It looks great, but feels cheap to me

I really dont think it a great idea   if you wanna upgrade, you need more budget

You may try Ipod classic+ rockbox, maybe also get a portable amp with your extra money

just hesitating on which to take, and waiting for a better deal and my salary for this month

yeah, I check that a lot these days   planning to buy a used one, more economical

That's a great option but cost more. Win RT is costing starting $499, and the pro? $$$$$   the type cover is also beautiful, but totally beyond my budget   Great tablet, but the price may scare people away

Thx for your help  

It's totally ok to buy used I am not quite familiar with 160Ds, will look through some reviews first   Thx a lot

I am wondering where to buy those "ancient" cd players in USA, such as philips lhh500, kenwood 8020 or panasonic sl ps900, those made in 1980s or 1990s.   I think they are cheap and great for beginners, but it seems few are sold and mentioned here.