if it is just yourself I would recomend going to musiciansfriend here....
http://www.musiciansfriend.com/srs7/sid=040107083753012101207253222874/g=rec/s=mics/search/detail/base_pid/271139/Project Pack C 1000S and C3000B Mics
Features:
The C 1000 S:
Robust microphone powered via regular phantom power or integrated 9V battery
On/Off switch
Studio quality even when powered by a battery
Excellent as a vocal microphone
Works perfectly even from a greater distance for picking up choirs
Outstanding performance also when used for instruments
50Hz-20kHz frequency range
Cardioid polar pattern
C3000 B:
Large-diaphragm cardioid condenser microphone for universal use
"True" large diaphragm with active mylar foil diameter of 1" (25 mm)
Cardioid pattern for both vocal and instrument applications
Classic character and rugged construction
20Hz-20kHz frequency range
-10dB preattenuation switch
6dB per octave bass cut filter below 500Hz
The set:
Includes case, H100 shockmount, and C1000S windscreen
3-year warranty
and get this and a UA-5 pre
this way you would have a large diaphram for vocals and a small for your guitar. plug those into a UA-5 and you can pass a digital signal to your MD and a line signal to whome ever ampifies your sound.
I would not recomend DAT at all
stay with your MD for a while and get good at microphone positioning. later on buy a medialess form of recording like the nomad JB3.
welcome aboard.
although the easies solution is to make friends here and have one of us (who ever is close to you) record for you. there is a TON of experianced people here that really know what they are doing.