bisulfite dna modification kit

[Wen Huang]

Hi there,

I am just asking for suggestions on bisulfite dna modification kit,  
anybody knows some efficient, easy-to-use, not very expensive kit?

I am thinking about the following, anybody can provide reviews?

Millipore CpGenome DNA modification kit
Sigma Imprint DNA modification kit
Epigentek Methylamp DNA modification kit

thanks,
wen