For Mountain Bikes (MTB), prioritize hydraulic disc brakes and adjustable suspension forks with at least 100mm travel. For Road Bikes, focus on aerodynamic frame geometry and lightweight materials like Carbon Fiber or 6061 Aluminum Alloy. For Electric Bikes (E-bikes), ensure the use of branded battery cells (e.g., Samsung or LG) and brushless DC motors with a minimum IP54 waterproof rating. Always verify the groupset tier (e.g., Shimano Altus vs. 105) as it significantly impacts the price and performance.