As far as basic tasks go it's pretty responsive and quiet. There's something wrong with the graphics though because I can't get a Windows Experience Score because the Direct 3D test crashes.
yeah, it sounds like you need to reformat and get a fresh start. see if you can get everything up and running with just windows (and all necessary drivers, etc) on the SSD. don't even plug in your old HDD yet
edit: and as far as your old programs, games, etc., you really should reinstall everything. I know it's a pain, but a lot of programs need to have their registry files, ddl's, etc., in the right place to work properly
with Steam games there's a trick to do it without having to download everything again:
-first copy/move (backup) your \Steam\SteamApps\common folder (this is where all your games are) elsewhere
-I would uninstall Steam completely, and then reinstall the client
-exit Steam, and copy the above folder back into the new Steam installation
-start Steam, go into your Library, and select the option to install the games you have in that folder. it should find the files, and not have to download everything again
edit2: also a lot of your games' save files will be in your windows documents folder, so you might want to back that up as well