I don't have an opinion on skimmers cause I still don't really understand them. I ran my 40g for years with no skimmer, really no filter, no sump, just live rock and water flow. I only added the skimmer back in Nov when I bought the redsea 425xl because it came with it. Tim had recommended I DON"T run the macro reactor, which I did anyways and it killed my nitrates (so it's for sale now, I learned the hardway) he also lightly recommended I don't run the skimmer or at least IIRC didn't recommend that I do. I used it as a learning tool, and over time it did fill with sludge. My current setup, the Mariner 100 is a 130 g system. My sump right now only has 2 socks, the skimmer (which is still empty/clean cup despite running) and some LR, a spong filter between that chamber and the return pump. I'm contemplating pulling the skimmer entirely cause I don't think I need it, then using chamber 2 as a frag tank. that would be like a 20g frag tank.
In terms of the WB folks I had posted in R2R about the various brands I was looking at. Everyone that has a waterbox loves them. there are some great things about them. I messaged their customer service a few times and had great responses. But people still mentioned those stands (the new ones) were not great and most people with a tank over 100gallons were getting these add-on support kits to brace the stands. I believe waterbox offers them second hand if you want them, but not with the stand until you ask for it. I don't understand that.
The eshopps kit is the most robust stand I have seen. heavy duty marine grade plywood. it doesn't move/shake/shimmy. the tank itself is thicker glass. the doors are not my favorite layout as I have 3 doors instead of 2 like my 425xl had.
however the tank has amazing bottom bracing and corner protection. My original doors were mismatched paint, and eshopps sent me 3 new doors within a week:
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bottom bracing:
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waterbox offers the overflow both as internal and external in the size I wanted, a lot of people preferred the external... I don't... I like the internal more so the eshopps one just checked all the boxes for me...
but again, I can't stress enough, I'm in the waterbox group and they love their tanks.