Consider the typical serving size of your household; a 6‑quart model comfortably handles 4‑6 servings, while a 6.5‑quart unit gives a little extra room for larger roasts. If you frequently cook for guests or batch‑prepare meals, the larger 6‑liter (about 6.3‑quart) models are worth the extra footprint. Smaller families or limited counter space may prefer a 5‑quart appliance to save space without sacrificing core functions.

Two‑lid systems, like the Instant Pot Pro Crisp and Nuwave Duet, let you switch between pressure cooking and air frying without extra accessories, streamlining the combo‑cook process. Single‑lid designs require you to change the lid or use an attachment, which can add a step but often come at a lower price. If you value speed and convenience for frequent combo cooking, a dual‑lid model is typically the better investment.

Both technologies aim to deliver a crunchy exterior with minimal oil by finishing a pressure‑cooked dish with an air‑fry cycle. EvenCrisp (Instant Pot) and TenderCrisp (Ninja Foodi) use similar heat‑distribution principles, so the end result is comparable. The main distinction lies in the user interface and preset options rather than a measurable performance gap.

The Nuwave Duet and its variant with 540‑in‑1 presets provide the widest range, including sous‑vide, grill, and multiple sear modes alongside standard pressure cooking and air frying. The Instant Pot Duo Crisp Ultimate Lid follows closely with 13 functions and built‑in yogurt and proofing settings. If you need specialty functions like dehydrate or sous‑vide, the Nuwave models give the edge.

Safety is critical because pressure cooking involves high temperatures; look for models with overheat protection, automatic pressure release, and lid‑lock indicators. Nuwave highlights 15 safety mechanisms, while Instant Pot models include Sure‑Lock and pressure‑release alerts as standard. Choosing a unit with clear visual cues and multiple safeguards reduces the risk of accidents and gives peace of mind.

Most units feature detachable, dishwasher‑safe parts, such as the air‑fry basket and inner pot, which simplifies routine cleaning. Non‑stick coated pots (found on many 6‑liter models) require gentle handling to avoid scratching, while stainless‑steel interiors (Nuwave) are more durable but may need hand‑washing for stubborn residue. Regularly inspect seals and vent valves to maintain optimal performance.

Higher‑priced models typically include more presets, dual lids, and advanced pressure‑control technology, which can save time and expand cooking possibilities. For everyday meals like rice, chicken, and fries, a basic 11‑in‑1 Instant Pot offers excellent value. If you plan to explore niche techniques—such as sous‑vide, extensive baking, or large‑scale batch cooking—the premium features of Nuwave or Ninja Foodi may warrant the extra cost.

Yes, all listed models include a dedicated rice cooking function, often with preset programs for various grain types. The pressure‑cook cycle can also speed up rice preparation, while the air‑fry component lets you crisp leftovers. If you rarely cook rice, a combo unit eliminates the need for a standalone rice cooker and frees up countertop space.