I have a ViaAqua 1300 and a ViaAqua 2600. The 1300 is 16W and the 2600 is 45W. The ViaAqua works fine but is flimsy. I cracked the outlet just by tightening the plastic oring sealed 1/2" adapter. I wasn't being unreasonable. Also the plastic has all but fractured for the inlet impeller end cap. This means is doesn't seal properly and is weeping.
That said. If you are gentler than me

the ViaAqua is cheap and does the job.