Hey I am not really too sure what all to suggest to you, I tried genesis attys but they did not turn out as well as i would have liked... i mean they worked and they were nice but out and about for me they were just too finicky... if you like the igo-w that means you like dripping...
may i suggest you look into the REO it is a bottom fed mech mod... here is mine
squeeze the bottle, wet your wick, the rest drains down... all the joys of dripping without the hassle...
it is a little bit out of your budget, but if you really enjoy dripping, but dont like to drip, this is your best bet... i love it, its my unicorn
its so great... i have a second, larger one on its way... the REO Grand, the one in the images is a REO Mini 2.0
If you get a LP Grand it will hold other size of atomizers they need to be bottom fed or modified to be bottom fed, but the REO Grand, with a RM2 is amazing...
thats pretty damn neat