good choice , the a1200 cute as it is just can't be upgraded without putting it into an ugly tower. the 4000 (with that hiflyer) is very easy to upgrade! enjoy.
Pierre
Yes the 1200 has all kind of upgredes including the ppc boards, but you just can't put a graphics card in there and enjoy a decent resolution... I HATE screen flickering! The toasterscan can help...but it just easy with the 4k.
