Looking for best top-off system

[dcombs44]

I found these two. Any suggestions on other units or reviews on these two.

This one I would have to find another way to secure the sensor.
http://www.mops.ca/cgi-bin/SoftCart.exe/products/DOCH-AT1.shtml?E+scstore
It lists for $59.90

http://www.top-off.com/viewitem.php?it_id=16

suggestions would be great.

 

[Reggae Fish]

I use the JBJ ATO...I like it and have had no problems.