I haven't used sensei so can't really compare the two, sorry
I have used GH for the past 4-5 crops and I love the stuff, easy to use, plants love it and allows for some versatility in late stages when you want to taper or increase.
@Renfro would be the best grower I know who's using it. If he's around I'm sure he will offer some insight.
I used the GH floranova line before this, it's even easier with just two bottles and also works well. It's much thicker than the trio tho and prob wouldn't do well in certain hydro or automated setups.