I've used the Tascam US-1800 a few times.
Lots of inputs, decent number of outs if you need them. The preamps are ok, if nothing special.
The only two issues I've had are:
-some difficulty selecting recording mode (seems to choose 96kHz or 48kHz arbitrarily - and not obvious how to change it again)
-playback of one particular recording via Audition caused some weird issue that locked up playback. Was never able to get to the bottom of it: only the combination of that recording, Audition and the US-1800 caused the problem
But I don't think anything can compete for the money. Add in a ADC (a spare UA-5?) and you can run 16 tracks simulaneously.
This is a rough mix of a four-piece (3x vox, elec gtr, elec bass, drums, keys/pedal steel/acc gtr) band recorded with the US1800. 48kHz, 16bit single untracked FLAC file:
http://manchestertaper.co.uk/wp-content/uploads/2013/06/crane-MTmix-48kHz-16bit-.flacThere's a bit of background hiss in places but that is because I haven't muted a noisy DI when it wasn't in use.