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I don't know about the Remora's but I definitely think the Euroreefs are a night and day difference. For a RS-80 its only about $30 more than your looking at.
I would go for a sump, my first was just a 20G tank with homemade partitions and a cheap submersible pump. It gets equipment out of your tank, gives you surface skimming, adds water volume and flow, you can section a bit off for a refugium, and it's easier to top up.
When I converted my Turbofloter to in-sump it never really performed very well.
If you get your main tank drilled with an overflow it could be cheaper than adding a dependable overflow later. Keep your eye out for a used tank there are some good deals around.
I read up for a year before my first tank and I still bought unnecessary stuff.