请问哪个品牌的Conventional vent 50-Gallon Hot Water Heater好一些？

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请问哪个品牌的Conventional vent 50-Gallon Hot Water Heater好一些？现在租的是EnerCare，品牌是Bradford White 50 Gallon, Conventional Vent，已经15年了。不想换tankless，想换一个同样的Concentional vent 50 Gallon，先租几个月如果没问题就买断（EnerCare tech建议的，以防新买的热水器是lemon）。因为看到现在的Bradford & White hot water heater 用了15年还没坏，就要求换一个一模一样的，但EnerCare不能保证换同样的。刚刚上网查了一下，据说Bradford White 的两三年后可能漏气（The Bradford White 50-Gallon Gas Water Heater has a couple of issues that new owners should bear in mind. The general consensus among most users is that this gas water heater is both very pricey and has questionable build quality. There are reports of gas leaks appearing in the second or third year and a high installation cost that adds onto the unit’s price tag.）。如果是这样的话似乎没必要坚持同一model了。似乎EnerCare可选的品牌有4个：GSW, Giant, Bradford White, Rheem。请问其中哪个品牌的好一些？谢谢！