I own a 24 gallon Aquapod with 70 watt HQI Sunpod and it is definately a quality aquarium for SPS. I've got about 20 differend SPS frags all of which are doing well and have good coloration. I'm thinking about making it a merry Christmas and upgrading to a 150 watt Sunpod. I want a bit more color out of my corals and just more light in the tank to brighten up some shady spots.
I looked at the Cadlights 25 gallon and I was very impressed. To me it's an improvement on the Aquapod for a few reasons. There is a sump area in the back of the Aquapod is pretty narrow and there's no real space to do a refuguim. There's also no real space for mechanical filtration or space for a skimmer. The Cad has room for all of these, with a mechanical filtration area and a fuge area (with light) already in place. And for $449 that's a pretty quality all inclusive set-up.
I'm still quite happy with my Aquapod, but if I were buying today I'd most likely go for the Cadlights 25 gallon.