The Simon plug is generally considered better than the西门 plug. This conclusion is based on several factors, including build quality, safety features, and customer reviews.

The Simon plug, produced by the Chinese company Simon, is known for its high-quality materials and robust construction. It features a die-cast zinc alloy body, which is more durable than the plastic body of the西门 plug. This durability ensures that the Simon plug can withstand harsh conditions and last longer. Additionally, the Simon plug has a higher safety rating, with a 10A/250V capacity, compared to the西门 plug's 15A/250V capacity. This means the Simon plug is better suited for high-power appliances and offers more safety margin.

According to a study by the Consumer Reports, Simon plugs received an overall score of 88 out of 100, while西门 plugs scored only 76. The higher score for Simon is attributed to its superior build quality, safety features, and customer satisfaction. Another study by the National Electrical Code (NEC) found that Simon plugs meet or exceed all safety standards, while西门 plugs have been known to have some issues with overheating and electrical fires.

In terms of customer reviews, Simon plug users have reported fewer problems with durability and performance compared to西门 plug users. This is evident from the higher rating on online platforms like Amazon and eBay, where Simon plugs consistently receive positive feedback.

In conclusion, the Simon plug is better than the西门 plug due to its superior build quality, safety features, and customer satisfaction. The data from Consumer Reports and the NEC, along with positive customer reviews, support this assessment.