Carb sync tools - what's better, the cheap gauge model or Motion Pro fluid type?

[Steve]

Bought a unit from E-bay a few months ago.
It is one vacuum gauge hooked up to a manifold.
...

If you have ever watched a carb sync done with a 4-gauge setup (that includes the 4-column liquid ones), you should have noticed that when you turn one sync screw, the level changes on all four.

If you use a single gauge (as pictured) with multiple valves, your fingers will be worn raw with all the valve turning that you will have to do. Lets say that you look at #3 (the master carb on a set of BS carbs) and see a reading of "10". You then look at #2 and see "15", so you turn the sync screw until it also reads "10". However, if you go back an look at #3, it will no longer read "10", so you will have to note its reading, then go back and adjust #2 to match. It will take several attempts to get those two carbs to agree with each other.

Then you proceed with #1.

You finally get to do #4.

You may think "once #2 and #3 agree with each other, nothing else will change that", but you will be wrong.

Using a 4-gauge setup, I could do a full carb sync, remove the adapters and be half-way around the block before you got the first two carbs to agree with each other.

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