Tom,
I've only used the Tunzie 6025 and 6045. Had issues with the brackets breaking. I had an acrylic 90 that only had 10x12 openings one on each side. Running cords through those was a PITA.
Switched over to MP40's and have been very happy with them. I did have 2 wetside magnets split on me over the last month. I believe that they both were original 1st generation. Talked to Ecotech support and had new Wetsides in a few days. I've been completely happy with their customer support there.
I liked the mp40's so much I picked up a pair of used MP60's for my 240.
I run 2 mp40's on my 60 gal frag tank, 2 mp60's & 2 mp40's on my 240g, all controlled wireless by Apex.