They are a lot like a car. People will have their on bias as to what works best. Remember this is "their" environment which may not be the same as yours. So it is a tough question to answer. Whatever you do my suggestion is to take the time and find a couple to look at that will meet your needs. Today, tomorrow, and further on down the road (if you upgrade).
Example one of my first skimmer purchases when I started in 1999 was an ETSS skimmer. Built well, worked well, but required too much fiddling with my setup. I was never happy because I was always adjusting. I later tried the Becket mod on it which helped but still wasn't to my liking. So a bit of a wasted purchased.
I followed up with that by doing some more reading then making a call over to Jeff at LifeReef. Purchased a SVS2-24 in 2000 and still use it today. I've not seen any reason to change and it has worked across many tanks I've setup. Originally purchased for my 100 gallon, later used on a 40 breeder, and used currently on my 210 gallon mixed reef. I will be using it on my last upgrade which is looking to be between 340 and 380 gallons.
Look for quality of life for you, foot print, size, pump requirements, ease of cleaning, etc. If you can do that upfront I see no reason why it will be your last skimmer purchase. They last a long time when properly built and taken care of.
