You are describing cartridge mods which IMO, don't provide better throat hit but can provide more time between having to refill the cartridge.
If you want the best throat hit, then you need to get a bigger battery PV, either a 5 or 6 volt PV. I prefer the 5 volt myself. More power, warmer vapor, much better throat hit, more consistent plus you can get 5-8 hours on one battery charge and the batteries cost only about $2.50 each. You also tend to get better throat hit with higher nicotine liquid, (24mg - 36mg liquid)
Two 5 volt PV's that are well reviewed are the Prodigy V2 from puresmoker.com and the GLV from greatlakesvapor.com. There are many good 6 volt PV's also, such as the GG, Silver Bullet, chuck, nhaler, Super T, etc.
Good Luck