The Trojan T-105 is considered the best on the market because it has a cycle life (how many times you can charge and discharge the battery) of 750, which is the most of any battery on the market. It weighs 62 pounds.
The other Trojan battery that is good for your golf cart is the T-125, which has a cycle life of 650 and weighs 66 pounds.
Both can be bought with different terminals like the "L-post." The rate of discharge is 447 minutes at 25 amps or 115 minutes at 75 amps for the T-105 and 488 minutes at 25 amps or 132 minutes at 75 for the T-125.
US Battery Manufacturing Company
The US-125 is high on the list of quality golf cart batteries for two reasons: 1)it is sold in sets coming from the same batch and 2) the company that sells this battery is a manufacturer, not just a distributor. They weigh 67 pounds but don't have as much cycle life as the Trojans--625 cycles--but the rate of discharge is better at 517 minutes at 25 amps or 140 minutes at 75 amps. US Battery also offers the slightly lighter US-2200 that weighs 63 pounds with a rate of discharge at 474 minutes at 25 amps and 122 minutes at 75 amps.
The E-3600 Exide battery is probably the best battery but has the lowest cycle life of the other batteries at 600 cycles. It is very durable with good vibration resistance, weighs 62 pounds and has three gang vents. The rate of discharge is 390 minutes at 25 amps or 110 minutes at 75 amps. Exide makes another battery, the GC-2H, that has a better rate of discharge but has a cycle life much less than any of the others.