track faster?
agree...haha...so next...if wanna buy b+w, need to ask, "ni nano coated ker?"

if u already have a D3100, upgrading to a D5100 is pointless IMO....

if budget restricted, get the D5100 wif a good lens (or two )

if u wan something light, go Canon (don kill me all nikon sifus  )

(i prefer nikon bodies because of it is heft and I feel comfortable and more secure when holding it, when holding canon i afraid it will juz fling off my hands  )

price wise looks good value, but greatly depends on condition. As usual, i dont like Tammy. So even its cheap, i always feel fishy when stuff sell together with Tammy.