I've experienced good and bad. I think that's with every device though. If you aren't hurting yourself financially by doing so, I'd say it's a decent mod. If things are tight and you are on a limited vape budget, I'd say there are maybe some better options.
I like the soft bottle, I like the form factor, I like the locking switch. I don't like the tiny bit of leakage I'm getting from the 510 on the inside of the mod, I don't like the blemish that mine came with, for the price it never should have gone out if there was any type of QC in place, and I don't like the gap between body and door. I like the way the contacts are made, I like how in the 2x700 version, the door holds the battery, and I like how all my 24mm RDA's sit flush. I don't like that the black is not black it's more like charcoal grey and I also don't like how if it gets scratched it's super obvious cause they are printed white then died (which is also why it's grey instead of black). I like how light it is and how available it is compared to some other mods.