Best tablet under $400

You are answering a consumer research question. Name your top 3 products, in order, with the exact product name and manufacturer. Judge each one on its specifications and measured results; do not copy a review site's ranking. If you are unsure, say so. Do not invent a product that does not exist. Prices are a constraint where stated; if a constrained pick does not exist, say that and give the closest honest alternative. This is not a paid placement.

Reply with only a JSON object, no other text: {"knowledgeAsOf":"month and year your training knowledge runs to","picks":[{"rank":1,"product":"exact product name","manufacturer":"brand","reason":"one short sentence naming the specification or test result that decided it","caveats":"price or availability doubts, or empty"}]} with ranks 1 to 3.

Question: Best tablet under $400

{"knowledgeAsOf":"June 2024","picks":[{"rank":1,"product":"iPad (10th generation)","manufacturer":"Apple","reason":"Its A14 Bionic delivers stronger CPU benchmark performance than similarly priced Android tablets, making it the best general-purpose choice.","caveats":"US starting price is $349 before tax for 64GB; storage is limited, and the screen is not laminated."},{"rank":2,"product":"Xiaomi Pad 6","manufacturer":"Xiaomi","reason":"Its Snapdragon 870 and 11-inch 2880×1800 144Hz display offer an unusually strong combination of performance and screen specifications.","caveats":"Often available below $400 through import sellers, but I cannot guarantee current US pricing, availability, or domestic warranty support."},{"rank":3,"product":"Lenovo Tab P12","manufacturer":"Lenovo","reason":"Its 12.7-inch 2944×1840 display and included Tab Pen Plus make it particularly capable for documents and handwritten notes.","caveats":"The US tablet-and-pen configuration was listed at $399.99 before tax; verify the bundle, and expect slower performance than the first two picks and a 60Hz display."}]}

{"knowledgeAsOf":"mid 2025","picks":[{"rank":1,"product":"iPad (A16), 11-inch, 2025","manufacturer":"Apple","reason":"The A16 chip clearly beats the Snapdragon and Tensor chips in this price bracket on CPU and GPU benchmarks, and it starts with 128GB of storage at a $349 list price.","caveats":"Its 60Hz non-laminated display is a step below pricier iPads. It does not support Apple Intelligence. The Apple Pencil and keyboard cost extra and push the total over $400."},{"rank":2,"product":"Lenovo Idea Tab Pro","manufacturer":"Lenovo","reason":"Its MediaTek Dimensity 8300 gives near-flagship Android performance, and it has a 12.7-inch 144Hz display at about 2944x1840, a large battery and a bundled stylus, typically for around $300–$350.","caveats":"Availability, storage options and the bundled stylus vary by region and retailer. Lenovo promises fewer years of software updates than Apple or Samsung. I am less certain of current US pricing."},{"rank":3,"product":"Pixel Tablet (without Charging Speaker Dock)","manufacturer":"Google","reason":"It has a sharp 10.95-inch 2560x1600 display, the Tensor G2 chip and a long Google update commitment, and Google cut the dock-less version to $399.","caveats":"It sits right at the $400 limit. The Tensor G2 is slower than the A16 and Dimensity 8300. The display is 60Hz, and the tablet has no first-party keyboard or pen support. Stock may thin out as the model ages. The Samsung Galaxy Tab S9 FE is a close alternative when discounted below $400, but it lists at $449."}]}

{"knowledgeAsOf":"January 2025","picks":[{"rank":1,"product":"iPad (10th generation)","manufacturer":"Apple","reason":"The A14 Bionic chip outperforms all sub-$400 rivals with single-core Geekbench 6 scores exceeding 2,100 alongside class-leading battery endurance tests exceeding 10 hours of continuous web browsing.","caveats":"Base configuration starts at only 64GB of non-expandable storage and uses an unlaminated display."},{"rank":2,"product":"Tab P12","manufacturer":"Lenovo","reason":"Delivers the highest display resolution in this price tier with a 12.7-inch 2944x1840 LTPS LCD panel and includes an active stylus in the box.","caveats":"The MediaTek Dimensity 7050 SoC exhibits lower gaming frame-rate stability and display refresh rate is capped at 60Hz."},{"rank":3,"product":"Galaxy Tab A9+","manufacturer":"Samsung","reason":"Features a 90Hz refresh rate 1920x1200 display and support for Samsung DeX desktop multitasking driven by an efficient Snapdragon 695 processor well below the price ceiling.","caveats":"Charging speed is limited to 15W and the base 4GB RAM variant can experience aggressive background app killing under heavy multitasking."}]}