Their torrents and store content downloads work fine for me and are virus free. They're really slow about updating usually, but what they put out is reliable. They do tend to repackage other people's downloads and mods, like kt's store fix mods, and not give credit back to the original creators. However, it's very easy for new players to navigate, and they are very noob-friendly.

You can make a quick and dirty fix yourself to get the premium content working. KT mentioned that he was busy with school, and for those of you too excited to wait you can try making a quick fix. First let's make accessories like the roulette ball, poker cards, etc show up. Install your decrapified .sims3pack like you normally would. Then take an untouched version of the sims3pack and run it through s3rc.exe not decrapify.exe. Then extract the .sims3pack into several .package files by using delphy's program here :http://modthesims.info/download.php?t=364038. Take the .package files and put them in the overrides file. The accessories for the premium content should show up now.

Updating ccmerged.package for the new buffs requires a bit more work and some ability with xml tuning.
You'll have to open up the .package files in s3pe and search around for the buff information. For example, with the latest premium set, the buff data is in the .package with the data for the gambling skill. Look for the tag "BUFF" a copy the new information (starting with  <BuffName>WinningStreakStore</BuffName>) and paste it into the buff information in ccmerged.package. You can learn more about xml tuning here: http://www.modthesims.info/wiki.php?title=Tutorial:Sims_3_XML_Tuning_Modding. If this is too much, you can wait for KT to update or wait for Nona to post an updated ccmerged.package: http://nonasims.wordpress.com/2012/05/17/dcbackup-ccmerged-package-and-your-premium-content-items/
Good luck!