Wow, interesting threads and comments. I have a Halo Triton VV and love it. I've had zero issues-no leaks, no weak batteries, fast shipping and it got me off analogs. Not to mention 4-5 of my ADV juices are Halo so one big shipment, plus I earn reward points towards free liquids, I'd say, it's been awesome. I hate having my cc number out there to all these different companies..prefer the security of ordering from one or two reliable, safe vendors.
Now looking at a mech mod to a Trition VV, well not too much to compare since they are entirely different. I guess if someone wants to venture into trying a bunch of new tanks, dripping, bcc, then maybe the Trition wouldn't work unless an adapter is purchased which can be done too.
I think Halos stuff has been extremely reliable and I love my Triton VV. it's all a matter of preference