In my experience, there's no day that can't be improved by the purchase of electronic equipment.
With that in mind, I've been thinking of getting a recording interface to use with my computer so that I can more easily record my guitar. There's two boxes that have got my attention: The Line 6 TonePort UX2, and the PreSonus Inspire 1394.
They are both $199 at MusiciansFriend, so it comes down to features, and the biggest difference (off the bat) is that the PreSonus is FireWire based, and the TonePort is USB. FireWire is generally faster than USB (particularly if you only have USB 1.0 on your computer! ;) ) The TonePort seems to offer more 'neat features' and super-cool knobs and meters, but rates lower in the reviews than the Inspire.
On the other hand, the Inspire only has three reviews, while the TonePort has eight.
On the other, other hand, the TonePort readers seem to have encountered problems with latency, which is the big issue with these interfaces (i.e. a delay between the sound that's coming out through the speakers, and what's being recorded. This can really throw you off while recording.)
Giving up on the whole 'other hand' business; the TonePort offers more effecty things, but it seems like the recording software isn't quite as good (or is more limited.) The TonePort also has the meters and actual knobs to turn down the audio output and the headphone levels separately.
It's a quandry! What to do....what to do...