For conventional bikes, prioritize 6061 or 7005 Aluminum Alloy frames for a balance of weight and durability. For Electric Bikes (e-bikes), focus on the motor type (Mid-drive vs. Hub motor) and battery cell quality (e.g., Samsung, LG, or Panasonic). Ensure the drivetrain components are from reputable brands like Shimano or SRAM to guarantee long-term maintenance viability. For safety, hydraulic disc brakes are preferred over mechanical ones for superior stopping power in diverse weather conditions.