ok soo this is my opinion and you are welcome to dissagree soo here is da list
First on the list a odd one DRAIN BLASTER it has a MASIVE Air tank
the next is the 4B or the buzz bee big blast
it releases its air SUPA FAST and well I can't argue
also if ya evre come across a beserker at a thrift store they got the same tank but simpler
so the next one is THE TITAN it is just big tank
it shoots a monster missle and its tank is pretty big
the next is THE PANTHER is is a tiny pistol with A BIG TANK
it is perfect for intergrations and well its cool also
make sure it has a white pump and a white barrel
if it is black it has a small tank smaller than a hornet
air zone also released one but it has the good tank?
next one is well yall saw it coming XTREME BLASTZOOKA
I personally don't like it but it is still pretty cheap and here is buy link https://www.amazon.com/Buzz-Bee-Warriors-EXTREME-Blastzooka/dp/B01391I7F6/ref=sr_1_1?ie=UTF8&qid=1494034966&sr=8-1&keywords=xtreme+blastzooka
next one is the AT3K tank it is a reasonable tank and and be a long range pistol with 6 shots
and well other than that there are hornets and smaller tanks so yeah that's it