Hi chaps, this seems like the right place to be asking about speakers/headphones 
Currently I've got a set of Z-5500s which I've had for a couple of years now and have been fine, but I never use surround sound and being in shared accommodation I rarely have them above about an eighth of their potential volume either
2.1 seems a logical choice, as I enjoy bass from time to time. They'll be used principally for music and films, not much gaming.
I've noticed a few sets of 2.1 speakers recommended on here recently - the Z323, Z523 and Z-2300s spring to mind - although the Z323 has relatively poor reviews so is probably out.
So if anyone can answer it, my first question is - am I going to be disappointed with the sound quality of the Z523s coming from some Z5500s, or would I really have to be looking at the Z2300s? And is there anything else I should be looking at in the Z523 price range? (just under £70 from OcUK)
With the money I have left over from selling my Z5500s I'm also hoping to get some decent headphones, mostly for a 2-month holiday abroad next year but feasibly for the train and suchlike from time to time. Having read a little around the subject I think closed headphones would be best suited to me - and the NS1000s seem to be recommended. Will they work adequately plugged into, say, an iPod, or do they need a proper amp?
I've never had a decent set of headphones/earphones so don't really know what to expect - is the sound quality comparable to a moderately decent speaker set? (e.g. Z5500s). I can't claim to be an audiophile, but I don't want headphones that are going to sound tinny!
So, yup. Any advice accepted. Cheers in advance.

Currently I've got a set of Z-5500s which I've had for a couple of years now and have been fine, but I never use surround sound and being in shared accommodation I rarely have them above about an eighth of their potential volume either

2.1 seems a logical choice, as I enjoy bass from time to time. They'll be used principally for music and films, not much gaming.
I've noticed a few sets of 2.1 speakers recommended on here recently - the Z323, Z523 and Z-2300s spring to mind - although the Z323 has relatively poor reviews so is probably out.
So if anyone can answer it, my first question is - am I going to be disappointed with the sound quality of the Z523s coming from some Z5500s, or would I really have to be looking at the Z2300s? And is there anything else I should be looking at in the Z523 price range? (just under £70 from OcUK)
With the money I have left over from selling my Z5500s I'm also hoping to get some decent headphones, mostly for a 2-month holiday abroad next year but feasibly for the train and suchlike from time to time. Having read a little around the subject I think closed headphones would be best suited to me - and the NS1000s seem to be recommended. Will they work adequately plugged into, say, an iPod, or do they need a proper amp?
I've never had a decent set of headphones/earphones so don't really know what to expect - is the sound quality comparable to a moderately decent speaker set? (e.g. Z5500s). I can't claim to be an audiophile, but I don't want headphones that are going to sound tinny!
So, yup. Any advice accepted. Cheers in advance.

now to sell the Z-5500s!
, though I did pick up an inline volume control for a few quid. I'm sure it'll come in handy.