I wouldn't worry too much about lumen claims. Once you've bought a few lights, you'll sort of know what to expect. Also lumens are a bit like torque with cars. More is usually good, but what it does with it, is often more important.
As for the Convoys. It can be daunting when first looking, as there are lots of choices.
First you have the different models. As a rule, the bigger the torch, the more throw the beam will be. So small tube lights are usually floody. Bigger lights will also hand the heat better. So you can usually use them for longer without them getting to hot to hold.
The Convoy drivers are available in different power outputs for the same torch. All the drivers are the same design however, with the same number of modes. They have High, Mid and Low output and you can also have strobe and SOS. The last two you can switch off however, so that you don't see them ever.
In the listings however, you'll usually see more than one driver listed, might be something like 3*7135 or 8*7135. The drivers the Convoy use, use 7135 chips to regulate current. The more chips the higher the Max output. 8*7135 is their most powerful driver. This will give 2.8 amps to the tail cap, which is on par with many lights from Fenix, Nitecore, etc. So you'll get about the same PEAK output in terms of lumens.
Less chips means less current. The advantage here is, you still get a lot of light, but less heat and longer runtimes. The 4*7135 makes for a nice compromise as a usual blue light, as you'll be able to keep it on High for extended periods of time. A 8*7135 driver will tend to get hot and after 5 mins will probably be too hot to comfortable hold.
So depending on if you use your torch for short bursts or longer durations, one or the other might be better.
As for buying from that seller. Afraid I normally buy from China as I'm never in a hurry to get the items. Shipping time is normally 2-4 weeks.
Www.banggood.com have a good range of Convoy lights and have as far as I know always delivered genuine ones.
Www.gearbest.com also sell Convoy, but I recall a lot of them were fakes and not as good.
Or you can buy direct from Simon at Convoy flashlights, he has an Aliexpress store, just search Convoy flashlights on Google and you'll find it.
The only negative with Aliexpress is, they don't take PayPal. Whereas banggood do. I like using PayPal, as it's super easy and reliable if you have to raise a dispute. So gives you very good protection and come back.
Last up, most Convoys are also offered in a different tints. Different tints will slightly affect PEAK lumens, but you'd never be able to tell with the naked eye. But you'll see tint every time you use the light.
Don't know if you have batteries or a charger yet. I like Samsung 25R and Samsung 30Q batteries, both available at banggood. The 30Q's will give better runtime, but cost more to buy. So unless you rely on the torch and need the runtime, then the 25R's will be more than up to the task. I'm yet to find a better battery for the money vs performance. Efest offer some good batteries too, bit more pricey, but you can get them within a day or two off eBay, should you need them quicker.
