Rob it's nice to see you back again
Winter has you thinking about a tank again huh, don't blame you at all.
My son has the 29 bio cube and it's a nice basic tank, we run it with the PC lights and no skimmer he has had softies and a few lps in it and until a major accident with hubby doing water change it was a great tank. We are going to set it up again after the new year.
I don't think any of those cube skimmers are anything more than airstone driven skimmers and you are better off with regular water changes.
The JBJ might be kinda cool and with the HQI and give you more versitility.
Does that help?