Your doctor usually prescribes or recommends a certain brand/set, in my experience. (Only been to two or three docs in WA/OR though, so what do I know?)
Anyway, I have a slight astigmatism in my right eye. I could have gotten the contacts that correct for that, but they're like two to three times as thick and very noticeable. It's like stepping back 20 years in contact technology. I decided to go with the regular ones and just save myself the uncomfortable wear and deal with the slight astigmatism (it's not the end of the world). I wear monthlys and I am near sighted. I don't wear them everyday anymore because I don't have to. (My job doesn't require distance vision. Only college does for reading the black/white/project board and that's only 3 days a week) I can read a computer screen pretty well from the distance that I usually sit from it. If not (i.e. I'm mega slouching in my chair and putting my feet up on the subwoofer/tower/desk) then I can increase the font size or make the video full screen.
I can walk or bike around town without my glasses fine. I sit at about -1.50, so that's why. I can also drive without my glasses, but not perfectly and I definitely don't like to. (Especially at night because of strong light halos/blurs/bokeh really fucking up my view, but I can do it in a pinch just fine...)
Anyway, monthlys are good for the cost. Downsides to the kind I have are that you need to put them in cases every night and cannot wear them while you sleep. (Really bad news bears otherwise. They like fucking dry onto your eye and it's horrible when you wake up. You think your eye is ruined for life because it's stuck on there pretty damn well and it hurts like a bitch to get off) That said, I don't think I could wear the kind that you can wear overnight/weeks constantly because my eyes are super dry.
On top of that, I don't actually like wearing contacts when I am at the computer for any extended period regardless of possible sharpness improvements. When I'm at the computer, my eyes don't typically blink that often. And because of that, the contacts dry up really fast, defocus, become difficult to get moisture into, and so I have to remember to blink. And it's just one more fucking thing to think about every few seconds that you don't want to. So, I don't wear them when I can avoid it...
I used to wear glasses for those kinds of occasions or when I needed my absolutely best vision. (Contacts do not have equal vision properties as glasses. Glasses are noticeably superior, but you probably wouldn't have noticed until I told you just now or if your optometrist did.) But mine were stolen. (Stolen. I don't know why people steal some shit, but they love my shit! My car, my bike, my glasses! Everything I touch!)
EDIT: Also, dailies do cost significantly more. $40+/month vs $15/month. (It adds up, mother fucker. That's $300+year for dailies! $300!!! You could buy multiple pairs of glasses with that!)