Again with the speakers.
I think I've narrowed the field down to two potentials. The M-Audio Studiopro 4s, and the ESI nEar 05s. They're roughly in the same price-range (a difference of about 30€ at Thomann.de), but the nEars don't have RCA-in, only 6.3mm TRS (I think that's the same chord as most guitars, for those more familiar with it from that) and XLR. The audio-out on the computer is a regular 3.5mm headphone connector, and 3.5mm -> 2xRCA are common; to hook up the nEar 05s I'd need a 3.5mm -> 2x6.3mm, and those have prooved very tricky to find. It seems my best bet would be a 3.5mm -> 2xRCA and then a couple of RCA -> 6.3mm adapters. But that does seem like a roundabout way to connect them.
But the extra 30€ does seem to give me a bit more bottom, [according to the manufacturers] the Studiopro 4s go down to 70Hz, while the nEar 05s go down to 60Hz*. I've read feedback that they're both quite good for their price-range, but I've seen a bit more praise for the nEar05s than the Studiopro 4s.
But the Studiopro 4s also have an extra headphone jack, meaning I can easily attach a pair of headphones without pulling out/plugging in wires.
It might be that the nEar 05s are a bit better, but I'm leaning heavily towards the Studiopro 4s, since they seem a bit more suited for my setup (ie. easily connectable, requiring only one power-cable).
*The information is a bit split here. The product info pages states 60Hz while the downloadable manual states 33Hz...
Update: After further reading, and finding a list where the ESI nEar 05s ranked pretty high, my previous conviction of getting the Studiopro 4s has been shaken.I found the list on some German forum (translation via Google), no idea who did the test... But if that list is even somewhat accurate, that would put the nEar 05s quite high on the price-to-quality scale!