I currently have a DAYLIGHT reading lamp which I like. It produces "5900K six color amalgam blend" which is supposed to be exactly like the lighting you see during the day outside.
It's great but real light like that makes the colors you're used to seeing indoors look much different so it takes some getting used to over the old bulb lighting you're used to.
For some reason, the 5900K bulbs are much more expensive than the ones I linked above.
CFL BACKGROUND
Color temperature: The lower the color temperature, the warmer the light. Warmness (red) or coolness (blue) can be measured in degrees Kelvin by a chroma meter. We observed a temperature of about 2700 K for soft white bulbs, whereas "daylight" bulbs measured around 3400 K — real noontime sunlight ranges from 5000 K to 6500 K.
Edit:
Here's a review by a lady that is more concerned about "soft" light so she goes for the non daylight bulbs. I think most would probably go for those but I like stuff to be daylight even if it makes stuff look strange to those used to warm fuzzy yellowish light that warps colors.
http://www.grist.org/advice/products/2007/12/14/
Another opinion:
With Phillips Marathon series right behind it. Costco has/had these in stock a bit cheaper than what the N-visions are going for. Plus, I own about 10 of both brands and prefer the Phillips Marathon for their yellowish color (the N-vision is more softish white)
Out of 10 bulbs, 1 n-vision went out (returned to HomeDepot). None of the Phillips have experienced any problems yet.
UPDATE: Also, I agree with the other FW posters here. The N-visions are a tad slower to reach full brightness. The Phillips Marathons are better overall bulbs IMO, but if you need ones with the smaller bases, the N:vision is the only choice. IKEA also sells another type of CF that has a smaller base (this one worked for my moms room when no other would)
To summarize:
1) Best overall "standard" edison base bulb == Phillips Marathon @ Costco (dirt cheap)
2) Second "standard" edison base bulb == N:vision HomeDepot (based off this deal)
3) "A-type" (I just made this up) smaller bulb base == N:vision home depot
4) "B-type" (I just made this up, too) even smaller bulb base == IKEA
5) If you need "globe" style bulbs, Costco HAD (read: HAD) 4 globe style bulbs for $2.75 after PG&E instant discount. I scored 2 boxes and all of them are working great)
Note that the IKEA bulbs are a lot slower than either N:vision or Phillips Marathon series, but if you NEED those sizes, you don't have a choice.
Also, forget buying CF bulbs online -- the shipping is a ripoff. Follow my advice and remember -- ANY CF bulb is better than an incandescent. For reading, stay with Phillips Marathon
I might just pick up some Phillips when I go to Costco next time.