I'm not sure what you're saying, do you intend on using the Dual Spec for vegging (in place of MH), and then use HPS for flower?
My favorite brands are 'Sun Master' (MH, Dual Spec) and 'Osram' (HPS).
As SSHZ said Digital Ballasts can run both MH and HPS so check one of those out, because you will love the results you will get from MH
Lumatek is really good and is what I use.
Zip