We just started a new minecraft world 27/5/13 on the mod pack FTB ultimate. It's really easy to install and comes with a gazillion mods. If you haven't played any minecraft technical in a while it's much like TEKKIT but offers a lot more content and is updated more frequently.
We're all in the progress of setting up our basic base, so far we're all clustered together and the goal will be to share with one and another, specially for the high tier Gregtech equipment.
Course if you want to play solo somewhere you are free to do so.
If this all sounds like mambojambo to you and you own minecraft I highly recommend you try out this package as it will put a lot of new life into your minecraft.
Some of us have been doing this for a while so we are more then happy to help you through the overwhelming start.
I'll be the only admin on the server to make sure any creative spawning or cheating does not occur. Needless to say I won't be using it myself either

Get
here:
Use FTB ULTIMATE PACKAGEMake sure to download this mod (launch FTB ultimate at least once) www.theicecave.net/files/user/server/TombStone.zipand throw the zip (DO NOT UNZIP) in your C:\Users\NedStar\Downloads\Ultimate\minecraft\mods directory
Dynmap