If you have other decent vaporizers, the only place for the MFLB is on the go. Not as a strike against it, it's efficient, small and silent and has a lifetime warranty, the only vape that does as far as I know. Iolite owners without complaints are very rare. MFLB shines like the sun when you're on the go, though, and it makes your material go a long way.
Out of your choices, you already HAVE a whip style vape, the vapolution. If it works tip top then you virtually no reason to buy a Dabhudda or the Silver Surfer, unless you find the vapor on the vapolution is airy and wispy; the SSV supposedly is the king of big, milky, whip-vapor hits.
Do you have lots of awesome glass from your old smoking days? A whip type vape can be used with a bong or the like with a very inexpensive glass adaptor, and used with the vapolution you already have. A glass vapobowl or vaporstar is something to consider if you want something that can be used with glass without being tied to an electric socket.
A volcano + whip type + stealth mobile (MFLB) + Glass on glass adaptor for whip = A pretty full vapor arsenal.
I'd actually like to hear how you like the Vapolution.