"2 Delta 410s will only give you 4 analog ins not 8. "
2 Delta 410s = 4 inputs and 10 outputs X 2 = 8 inputs and 20 outputs.
I'm not saying Terratec is crap, I haven't heard anything recorded on one that sounded bad (based solely on card performance, that is). But I've heard some amazing stuff done on soundblaster cards also.
The EWX2496 is a 2 in 2 out card, which means wykid will need to find a motherboard with at least 8 PCI slots (!) to get his minimum required 16 inputs and 16 outputs. As for sound quality, I don't doubt its published specs, or my own ears. It sounds just fine. But there's also no sign of balanced inputs or outputs.
I suppose this comes down to budget. I agree the RME is a better choice than either M-Audio or Terratec, if the budget has enough room in it.
How about another quote from that same review...
"Overall, Terratec's EWX 24/96 is a very capable soundcard with very similar high audio quality to the Audiophile (see box), and a bargain price tag in the UK. However, I'm not happy with Terratec's packaging and web site information, which misleadingly suggests that both CD-ROM and Toslink inputs can be used together. Bundling Gigasampler LE has also misled some musicians into thinking that they can run this alongside a MIDI + Audio sequencer, which isn't the case — the current drivers can only run one or the other. Even in the FAQ on the installation CD–ROM it maintains that both applications can be run at the same time, but then states "the EWX 24/96 physical I/O can only be used by one software application at the same time, in this case Gigasampler." Strangely,
GigaStudio 160 didn't recognise the EWX drivers as GSIF-compatible, although I got perfectly satisfactory performance when running it. Finally, I must mention that despite further misleading comments about 24-bit/96kHz ASIO support in the EWX manual, this isn't available from the bundled MicroLogic Fun package"