In terms of filters from pump to carb, I like the metal canister filters. I never liked the idea of fuel running through plastic over a HOT intake manifold!
I like the see through plastic filters before the carb. If properly located, heat is not a problem. I once changed an engine thinking that there was something wrong, only to find out that my gas tank was empty.... :banghead:
For some reason, my fuel economy was worse than I thought and I ran out of gas. (gas gauge wasn't working at the time and I just calculated how far I could go by mileage). :hmph:
Heat is not an issue if you have the filter properly located and today's plastics can handle the underhood temperatures.