Feed-The-Beast is another mod pack much like the technic pack in a way as which it has its own installer and directory to not overlap your .minecraft.
It is also in 1.4.2 and contains all the features of that update.
It has a SSP and SMP versions, along with a free server download on their website.
Here are the mods
Advanced Solar Panels
Modular Forcefield System
Obsidian Pressure Plates
Here is a link to a edited John Smiths texturepack to make your game better looking as it does not look the best in default but its still fine to play in, It is already set up for HD patch so you dont need to do it manually. http://forum.feed-the-beast.com/threads/32x-johnsmith-mod-support.741/
It is a very good mod combination and the biome mods make the game amazing to play on, the server may lag a little when using the portal gun rapidly but otherwise it is amazing. Play around with it for yourself and head to http://feed-the-beast.com/