I live in the tropics where the salt, wind, sea breeze dissolve a bike in no time. I purchased a $100 Kent La Jolla from Wal-Mart which is Aluminum Frame, but bike is pretty much the only transportation here in the South Pacific and most folks here use the "Sun Bike" due to the durability and resistance to the elements. My question is, should I just bite the bullet and buy a Sun Bike or be ready to replace things as they break on the Kent. There is a big difference in money between the Kent and Sun. I am thinking the Sun Bike has better components and would be less problems. Any advice would be appreciated.