Pros and cons of a higher balance current? Sure, higher balance current could make a charge cycle finish up/top off faster but is it really needed? Most people probably won't even notice a difference, unlike wattage. Also Amain's video for the price per watt says differently. To each of their own.

The D300 is 0.43 cents per watt, while most 200w chargers are around 0.55 to 0.70 cents per watt. Making it truly the best bang for your buck charger.
I just suggest getting a higher wattage charger now, even if OP runs just 2s, the extra wattage can help in the future if and when he moves up to bigger cars that needs more voltage. IE, 4s and 6s packs. A 200 watt charger (100 per channel) won't be able to do 1C on a 6s pack that is higher than 5000mah, period.
Edit: wattage most certainly DOES matter. No matter if your bashing, racing, flying, what not, it always has a play in something.
I'm not trying to fight on which charger is better I'm just basing my recommendations on facts, tech, specs, and math. Math does not lie. ?