The Maurten is 80g of carb? The SIS says 22g of carb. Is it fair to say overall you're taking about 9 gels equivalent, dissolved in about a litre of fluid? Seems a far easier way to consume the carbs than faffing with so many gels.
Well that’s part of the advantage of Maurten is it’s more efficiently delivering what you need I think so maybe a bit unfair. Really best advice is find out what works for you (brand/caffeine/frequency) and go with that.
I don’t think that necessary - but really you need to go with what works for you.
My marathon routine is Maurten 320 1hr-30mins before, one at around half way and then probably a gel or two (one caffeine) if I’m flagging