After watching a few videos for 5 mins, I kind of like the way the seafoam one worked. There's a fine line with solvents though. Sometimes less abrasive can be better, otherwise there's plenty of other things I could run through it if I wanted. Too heavy and you could ruin something, or dislodge something too quickly that could cake on further down the line or react negatively after combustion without proper additives. Some older cars don't like 15% ethanol gasoline (Unleaded 88). And if your car can handle it, only buy it if it's substantially cheaper. For awhile it was more expensive than unleaded 87, which would be stupid to pay more for it unless there was a specific reason you needed it. The whole point of unleaded 88 was for it to be cheaper than normal gasoline due to the increased ethanol content, and for cleaner burning emissions. But it doesn't last as long as ethanol free gas, so paying more for more ethanol isn't cost effective.
I'll have to check out more videos though when it comes time.