Motivation of choice: need a PCMCIA interface in-out to put on my laptop. Desired compactness and ability to catch its simple audio (voice speaking). Especially, need low latency to work with VSTi in FL Studio 7 = ASIO driver.
Config: HP Pavilion DV1000 Laptop, 2 GB RAM, 100 GB HDD. Win XP SP3.

UTILIZATION

Easy installation, driver nickel.
General configuration without pb: ASIO panel access to the interface of FL Studio. Impeccable works with a buffer of 512 samples, or low latency for gaming in midi keyboard, voice catches or restitution.
Little access to the manual, the card is basic: volume knob, jack 1 / 8 "input and output.

GETTING STARTED

Stability of drivers, good performance of the signal with a lot of VSTi (synth and effects), not stall or crash. Very good value for money.

OVERALL OPINION

I use this sound card since the summer of 2007 and I am very satisfied. I am now forced to change because I bought a new laptop and the PCMCIA port is no longer :-(.
+ Point: compact, good signal holding in ASIO, simplicity.
Point -: fragile connections, although being careful, no pb.
Not test other products before buying it. However, I tried several now and galley is to find an interface with good drivers (need to fall back on Asio4All with poorer perf). I therefore regret my ECHO Indigo.
Good value for money. If the PCMCIA port had not been replaced by the ExpressCard, I would not change that choice now and do it again without hesitation