You want a quality device that lasts without needing to buy a separate battery charger and separate batteries go with an Innokin Coolfire 4 and i believe they just came out with a new one with a larger battery capacity.
It is a very well engineered device and works really well , if you want cheap with no warranty Eleaf makes some mods but they are cheap all the way around .
You don't have to spend Provari type money to get a good device , i have mods in the $50.00 - $60.00 dollar range that i have been using for years , no issues whatsoever.
The Innokin MVP serious are great devices as well . I have a few Ipv 60 watt devices that are very reliable and have lasted a very long time .
OK , i am going to give you a link to some great mods that are very cheap :
You have the iPV 2X which is a 60 watt device and a iPV 2S , both are great and last a long time , you also have the iPV mini 70 watt device , all for $39.95 that is a steal .
You will need to buy a charger and batteries though but they are worth it , most places charge $80.00 + for these mods.
Deals are still good , your welcome lol.
Black Friday Deals on vape gear