Nikon upgrade dilemma

[Tommo1965]

Hi all

Im in a right old dilemma as the title says.... I've a mind to upgrade my D300s and Id love a D800 ($3600)....but do I buy a used D700 ($1800} and a imported 24-70 AFS {$1700}

as you can see the figures stack up the same, my lenses at present are a Nikon 17-35 ,70-200VrII , 60mm micro AFD and a Tamron 24-135 F3.5-F5.6....

On the D300s I use the 17-35 quite a lot and the 35mm end just scrapes in for portraits etc...I love the 70-200 but I find that a bit long for portraits on the d300s. {not enough room in my home studio}.I expect on FF body Id use it a lot more ..the tamron is a great walk about lens and good FL..but lacks the IQ of the nikon pro lenses..

so whats your advise....as I cant seem to get it straight in my head....one minute I talk myself into the D800..the next Im off looking on ebay at D700 and 24-70 AFS.....my head will explode soon Im sure

why do I want to upgrade the D300s...Id like lower noise at higher ISO..and better IQ

cheers for any advise you can offer

steve