The Allo Ultra 2500 sits in the middle of the disposable range, and the part that stands out is the e-liquid. Ten millilitres is a lot to pack into a device this size, and it's a big reason it reaches around 2,500 puffs. That number depends on how you vape, though. Longer draws and heavier use get through it faster. It runs a mesh coil, so the flavour holds up reasonably well rather than fading after the first day. There's no recharging here. The 1500 mAh battery is built to last the e-liquid, so when the juice is gone the device is done. Nicotine is 20 mg/mL salt, which keeps the throat hit smooth. Allo keeps the flavour list wide, close to thirty options, mostly fruit with a good number cooled by menthol. If you already get on with Allo, this is the step up from the smaller Ultras.