That sounds like a good recommendation to me. Read up on the tactical and see if that UI works for you. Basically there are two settings, one with the head tightened and one with the head slightly loosened. Both of these settings are individually programmed to your choice of the available output modes. For your use I would program the head tight position to turbo/burst and program the head loose setting to low or medium for general use. As long as you keep the head in the tight setting the light will always immediately come on in the top mode this way. If you want even extra insurance you could program both settings to turbo/burst and reprogram as needed for lower uses but that is overkill IMO.
Due to the UI it is very easy to use the forward clicky in controlled bursts of light as well without triggering mode changes.
The other option that is coming to mind is to check with vinh.
I have an XML2 and a XGP2 version of the Quark. For me, I find the XPG2 strobe to be too fast to be at all disorienting. I think it's around 25hz, but just looks like a flickering light that is dimmer than the steady beam on max. YMMV.
The XML2 version has a slower strobe. Probably around 10-12hz or something like that. To me, it's more disorienting. So, I'd recommend getting the tactical version of the Quark with the XML2 head.
That said, I'm not convinced that strobes are a useful defense tool. Maybe if you're a cop that is trained, but probably not to the average layperson. It's more likely to just annoy an attacker. Perhaps it might give you a split second of confusion, but unless you have something else to whip out in that split second, it won't do you any good.
Finally, IIRC 4sevens is no longer able to legally sell the Quark line. (Surefire lawsuit shut them down.) However, you might be able to get one from a 3rd party reseller's existing stock. If so, they are nice lights.