just voted streaming, yeah sure downloading is great, you can watch them again, dvd quality, but they do eat a lot of space as you said, and you need atleast a decent bandwidth speed(i leave my pc the whole day just to download 2 high res(about 700mb) i'd be lucky if i got to 3 XP, that's just how tad slow smart bro is XP), and they will eventually got stacked up on your HD. i'd rather buy at quiapo XP and save me some time and pain in the ass XP, well dont go there if you'll just buy one coz it will be pain in the ass too, i turn hakot mode when i go there buying atleast 10 dvd's XP, prices range from 15(i doubt these dvd's work) to 100(hell pumunta nalang sana ako sa comic alley), well i guess you wont get everything there, but i usually do a major excavation just to find those XP, and if your just not lucky, then there downloading wins XP
the main point is, go download if you had your own pc with a decent connection(1mbps atleast) and has lots of space, and what you're downloading has'nt been available in the philippine shore XP. but then, if you just watch in comp shops or you dont have a decent connection, then go streaming, and you could also download what you've streamed when you want to watch it again, i use real player(a cracked pirated one hihi) to download those streams if i want to watch it again. what it does is if you've just completed a stream, it moves the flv(stream) from the temporary folder to whatever directory and walah there you go, it gets saved from you HD XP and yes real player can play flv files so no hassle to convert it to mpg or wmv or whatever.