IMO keep looking (listening). I love Martin Logan's Electrostats but think you can do better for the $$$ at your price point than either ML or DefTech.
Mainstream brands that are interesting in this range include Paradigm, Revel, PSB, B&W, KEF, etc.. There are also speakers designed for your specific application that I haven't heard that include JBL, Atlantic Technology, Triad, and JTR.
Think of the subwoofer as its own thing, it doesn't have to match the main speakers, it is likely that the best choice will be different than what you choose for mains.
P.S. While I generally prefer Martin Logan to Paradigm, any dealer who tells you that the Preface is a "cut above" Paradigms, especially for HT, has put his or her interests over yours.