Significant confusion here.
This Samsung is NOT really similar to the Dell (eg c1760nw) - which is so small the paper drawer has to be open to hold A4.
The Samsung is MUCH bigger. (It takes up space all the time.)
Its actually a more advanced printer (does PostScript 3 emulation), and nominally has higher print resolution.
BUT there don't seem to be any *CHEAP* 'compatible' toners on eBay from the UK (and postage from the states kills cheap).
The Dell can be dead cheap to run. Its quick and simple (if dumb). And the fuser unit is happy to do double-sided "duplex" printing - the driver software supports it, although you do have to put the sheets through twice (it doesn't turn them over for you). And it has tablet printing capability.
All that is certain for that Dell.
Far from certain about the Samsung (though the price is amazing for a PostScript3 colour laser …)