IMHO I don't think hydro is worth the extra money unless you are growing commercially, correct me if I'm wrong but flowering time can not be reduced at all (unless you use that weird ripen up stuff).

If you have two rooms then it won't make much difference at all, you may get a very slightly higher yield but I don't think the extra costs are worth it.

Also there is more risk with hydro if a pump goes when you're not in you could have your house soaked (even worse if you're growing in the loft), and your plants could die in half an hour.

I have no reason for hydro they can be grown just as big in soil but it may take an extra two or three weeks if you're that impatient then spend the extra cash.

Also oeganic bud is the way to go.