It was a cold, rainy Tuesday when my old toaster finally gave out. The smell of burnt toast filled the whole kitchen. I was starving and needed a fast fix. I spent weeks testing two popular flip ovens to see which one cooks best.
Ninja SP151 Review
This neat little oven folds up to save you counter space. I got it to make fast snacks and simple sheet pan meals.
Pros and Cons
Here is a quick look at what I liked and what fell short.
| Pros | Cons |
| Flips up to save counter space | Inside height is very short |
| Heats up in just 60 seconds | Hard to clean the top coils |
| Makes super crispy french fries | Cannot fit a whole chicken |
Two Months of Crispy Snacks
I used this oven daily for two straight months. It became my best friend for late-night pizza rolls. The air fry mode makes fries so crunchy. You can literally hear the loud crunch with every single bite.
But, I found a clear flaw. The inside space is just too short. I tried to bake a small bird, and it hit the top heat coils. You must stick to cooking flat foods only.
Recommendation
This oven is perfect for folks with tiny kitchens or dorms. It is great if you mostly heat up frozen foods or toast. It is not good if you want to roast thick meats or bake tall breads.
Ninja SP351 Review
I grabbed this upgraded model to see if it fixed the height issue. It also boasts dual heat tech and a smart meat probe. Roasting a steak on a lazy Sunday felt like a total joy. The rich crust on the meat was just perfect.
Pros and Cons
Here are the best parts and the biggest letdowns I found.
| Pros | Cons |
| Taller inside fits thick roasts | Costs much more money |
| Smart probe cooks meat perfectly | Sear pan is heavy to wash |
| Cast iron-like pan gives great crust | Oven gets very hot outside |
Heavy Duty Cooking Over Two Months
After two months, I fell deep in love with the smart probe. I stuck it in a pork roast, set the heat, and walked away. The oven beeped loudly when the meat was perfectly juicy inside.
The extra room inside is a huge win for me. I finally roasted a whole chicken without any smoke or burnt tops. The pan is heavy and feels very tough. It gets super hot, so you must use thick oven mitts.
Recommendation
Buy this if you love cooking real meals like roasts and big steaks. It is a dream for busy cooks who love smart tech. Do not buy it if you just want to make toast or if you are on a strict budget.
Detail Comparison for Ninja Sp151 Vs Sp351
Let us put both of these ovens head to head. I tested them on five key things that matter most in a busy home kitchen.
Capacity & Size: Ninja Sp151 Vs Sp351
Both ovens fold up fast to save your counter space. But the SP351 gives you much more room inside for taller food.
| Feature | Ninja SP151 | Ninja SP351 |
| Tallest Food | Flat sheet pans only | Fits a 4 lb whole chicken |
Rating: SP151: 7/10 | SP351: 9/10
Cooking Performance: Ninja Sp151 Vs Sp351
The SP151 is great for fast air frying. The SP351 has a heavy sear plate and dual heat, making steaks taste like they came from a real grill.
| Feature | Ninja SP151 | Ninja SP351 |
| Best For | Basic air fry and bake | High heat sear and roast |
Rating: SP151: 8/10 | SP351: 10/10
Ease of Use: Ninja Sp151 Vs Sp351
The dials on both ovens are very simple to read. But the built-in meat probe on the SP351 takes all the hard guesswork out of cooking meat.
| Feature | Ninja SP151 | Ninja SP351 |
| Controls | Simple turn dials | Dials plus smart meat probe |
Rating: SP151: 8/10 | SP351: 9/10
Cleaning & Maintenance: Ninja Sp151 Vs Sp351
Both have a back panel that drops down for deep cleaning. The heavy sear plate on the SP351 is a bit harder to scrub in the sink.
| Feature | Ninja SP151 | Ninja SP351 |
| Pan Type | Light metal pan | Heavy cast-like sear pan |
Rating: SP151: 9/10 | SP351: 8/10
Cooking Speed: Ninja Sp151 Vs Sp351
They both preheat in just 60 seconds. You can start cooking your meal right away when you get home tired from work.
| Feature | Ninja SP151 | Ninja SP351 |
| Preheat Time | 60 seconds | 60 seconds |
Rating: SP151: 10/10 | SP351: 10/10
Conclusion
Both of these flip ovens are highly fun to use. If you want simple snacks, save your cash and get the SP151. If you want to cook big, juicy meats with zero stress, the SP351 is worth every penny.