According to the VICE site, the last release was Dec 2009, Pickle's release was Mar 2010. I'm guessing there's no actual difference between StreaK's and Pickle's other than the menus/frontend?
There's also PanMESS - C64 works well in it (you'll need to add the c64 Mess bios) although only for games that start automatically once loaded (snapshots etc) as some keys needed to type certain characters are not catered for (yet) it seems