Aquactinics tx5 or tek 6 bulb

[Ynotme4886]

I currently have a tek 6 bulb and have been offered the opportunity to get an Aquactinics tx5 at a great price.

I need a fixture for my 37.5 gal custom acrylic nano and have never used either of these fixtures before.

Anyone have any input on either of these units and which is the better of the two in terms of quality and craftsmanship and durability and overall output of light.

Thanks for any feedback given

Its much appreciated.