ATX Mid Tower Best 2026年。Tier 1 Show Build: Lian Li O11 Vision ¥29,800(3-side glass・compact)・Lian Li O11 Dynamic EVO RGB ¥34,800(triple glass・showcase)・HYTE Y70 Touch ¥69,800(LCD touch)・Tier 2 Mainstream: NZXT H7 Flow ¥18,000(Mass appeal・Mesh)・Lian Li LANCOOL III ¥29,800(Air Flow)・Fractal North ¥26,800(Wood accent)・Tier 3 Cost-perf: Corsair 4000D Airflow ¥15,000・JONSBO D41 Mesh ¥12,000(Asia budget)・Tier 4 Budget: Cooler Master MasterBox NR400 ¥8,000・2026年 Show Build Vision/Mainstream H7 Flow定番、$120-300帯人気。