I've had my Coralife Power Center for ~3 years. It has both a day & night (2 day & 2 night + 4 constant) timer + wave-maker timer. I also have a couple Woods digital timers from Wal-Mart($15)/Canadian Tire(>$15). The Woods does not have a night timer. They both have a lithium battery backup and definitely look like they're from the same plant. The only thing I had to replace on my Coralife was the backup battery (~$4). If you are trying to save space and you like the day/night feature, I would recommend the Coralife. However if your using one for the wave-timer function, I can say my one of my Koralia's have a hard time restarting after the power goes out (now resolved with a backup battery, which I recommend for everyone!). This ended up being a much longer review than I intended, and could go on....fortunately for anyone reading, I'm getting sleepy.
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