+1 on the sampler. If time is of the essence, Walgreens carries de blades, so does some beauty supply stores.
A sample pack from Maggard's so you can choose which blades you want in it. Some I personally like are Personna Med Prep, Gillette Silver Blue, Personna Red, Astra SP, Polsilver Super Iridium
+1 Making your own sampler pack is a fine idea - and these are good suggestions.I've never been a fan of sampler packs since they are on the expensive side and depending on mix you might find yourself with more blades you don't like than those that you do. I would recommend looking around on the forums a bit and seeing what are popular and then trying a few 5 or 10 packs and go from there. Unless you are going for the absolute best blade you probably will find that you can target 2 or 3 types that will be almost a sure thing.
Some of the more recommended are:
Astra SP
7 o'clock yellow
Feather
Persona Red IP
Persona Blue Med or Lab
Shark SC
PolSilver SI
You might also want to try a small pack of Derby since it's one of those blades you either love or hate and for the price you could give it a shot.
EDIT: Oh and welcome to B&B!
+1 Maggards sampler.