Breast pumps- FTM needs help from some experienced moms!

I cannot seem to get a straight answer on whether or not the hand free pumping bras work with the pumps that arent considered to be hands free.

The pumps I'm considering are

-Medela Pump in Style (covered by my insurance, not hands free)

-Spectra Blue (only $100 up charge, not hands free)

-Medela Freestyle ($250 up charge and hands free)

If I get a hands free pumping bra, does that essentially make the first two on my list work like a hands free? Or does the special bra have to be used with the special pump (freestyle) ?

The couple people I've asked so far gave me contradicting answers....