Some people let ONE experience set their opinion and then blast away over and over on some brands.
I've had 6 Eleaf mods in my house so far, from the small iSticks to the TC100W, the Pico and TC60W, and they all have been extremely solid. One eventually died from old age (a 20W) after a LOT of usage, a 30W(which is still working great) that I gave to a friend as a kit to help them out as they couldn't afford something decent and had been screwed over with a store selling them on a pen type that wasn't working out for them at all.
If anything, once I had my TW60W, both my wife and daughter just had to get one too... Then I got the TC100W to give it a try and absoltely love it,.. it is comfortable in hand, the squeeze trigger is great, the battery life is amazing, and it's a solid, great looking mod.. after a few weeks with it, I just went and bought two more so my wife can have one and have a spare.
My daughter got a Pico a couple of weeks ago, and between her and several other people that have one, they all absolutely love them... it's a solid mod.
Seriously, they are way too underrated, probably because they are so inexpensive..
I've been looking at so many mods, and so many are 3-4 times the price, and not a single one has been able to convince me in any way that I should go screw myself over financially and get such a more expensive mod.
If you want a small form mod with all features, the Pico is a great mod.
If you want a sleak, comfortable mod, the TC60W (but no SS in TC mode).
If you want a comfortable, long lasting battery life and all the feature and don't mind the larger size/weight (it is a 2 battery mod, but even them, very well done and holds incredibly well in hand), consider the TC100W.
The more mods I get, the more I tend to end up with Eleaf ones. The other ones I have, are used for drippers or my extra tanks, so I can simply grab and dash with different liquids in them, but my daily is now my TC100W... a full day of battery life is too great, compared to have to charge on the go or have to carry and switch a few batteries.
Also worth noting.. on my local groups, I've seen just about every type/model/brand of mod being re-sold or up for trade. The Eleaf ones are rarely traded, and if they are, it's mostly due to people getting something bigger, or the couple of times I saw the Pico show up, was because the person simply found it too small for their hands or want higher than 75W. Most times someone posts about their Eleaf mods, it's about how much they love them.
I've seen a few haters, and usually, it's due to one incident over one mod... considering how many thousands of mods are out there. I've seen a few that simply didn't even read the instructions and make false assumptions about a few things, or simply don't know how to actually use their devices and blame it on their mods.