On with the show...
@ndrwater would you say that it's important to have the super accurate Hanna for certain tests if you're not trying to run an SPS system? I'm in the same boat looking for better test kits and only have softies and LPS. I am willing to pay more if it's properly important but I'm not sure just how 'exact' your numbers with the different things need to be.
Great question. Let me preface to say I am lazy... Hate testing, and anything else that takes away from me just staring at my tank..
I also keep an SPS dominant tank, and am very familiar with the trials and tribulations associated with SPS.
So... IMO, things like Nitrate are less important than things like Alk. Again, IMO, the Hanna is worth it for the ease and accuracy. All of the kits will give a value that can be used to make an informed decision as to the overall health of the tank. In how this relates to a softie tank, I stand by the Hanna. A much smarter person that me once said SPS= Stability Promotes Success. This is still absolutely true with LPS, softies, whatever.
I have found that regardless of the test kit being used, making the grand assumption that the kit is being used correctly, that consistency is key as to the results given.
As an example, if you were to get an"X" value on whatever kit, and the following week, got a similar result, then the "average" is more important than the actual number. Conversely, if your results were "X" plus 100, then something is definitely wrong, and steps need to be taken.