Leveling Kit...2010 Tacoma

I have a 2010 Tacoma, and I've just recently heard about leveling kits,I don't have the stock tires on the truck went up one size bigger and having no problem, but I would like to level it out, I know there are spacer kits, and also did some research on here and heard about 5100's, well I'm a novice to all this so I have to ask is it better to go with these spacer kits, or the 5100's, and if I do go with either I would guess they would only go on the front right...Right

Thanks For Any Info.....

 

5100s > spacers

 

Thanks Dust,
I think I'll go with the 5100's in the front, and aal in the back, I would go with the 5100's all the way around but I'm trying to keep the price down, and got pretty low miles on the truck, so I'm sure the shocks in the back are good....wadda think..?

 

When you buy the 5100 for the front is that all you need??? I guess a front-end alignment is a must afterwards? I want to start at the 1.75 setting and leave the back stock to see what it looks like with 275/70/17 added? Any ideas would be great to know if this will work without anything else.