i have cpr bkpack 2 reef ready. and so far i have no complaints it's been running for the last 2 yrs and its not noisy and really easy to set up. it comes with instructions. I like it a lot better than the red sea prizm that i use to have.
I have a Seaclone 100 Skimmer and in my opinion it works great! I have only had it about 2 months but it seems to pull a lot of gunk out of my tank. As far as noise it's probably louder then most cause it uses a PH with a venturi to mix air into the water. The venturi make a bit of noise gasping for air.....but it works superb. My tank is a 55 by the way...the skimmers rater for 100gal so it might be a little overkill for a 29...maybe I dont know.