I prefer gel candles too because their light is very bright compared to other types of candles. The issue with gel candles is that they can melt in high temperatures. I've bought several gel candles online in the summer and they arrived slightly melted and misshaped. So this type of candle is not best for shipping, especially in the summer. It may be okay to ship in the winter months.
I also agree that some gel candles have a very mild scent that is barely noticeable. But good brands which tend to have a slightly higher price usually do not have this problem.