There's a lot of great jackets, I don't know how long your commute is, but I'd think about getting an electric liner for the cold weather. I use a Gerbings heated liner with a Tourmaster Transition 2, along with heated gloves, and this will cover me from 35 to 85 degrees, above 85 and I switch to my mesh jacket. In the medium temps I use the liner but don't plug it in, and high temps, no liner with vents open. I don't ever need layers of sweat shirts and the like, just an electric liner (not a vest) and a good jacket with plenty of vents covers a lot of ground. Also if you get to hot or cold you just turn a knob, no need to pull over and change layers.
2009 Wee Strom ABS (current)
1987 Harley Low Rider Sport (current - with 205K miles)
2009 Aprilia Mana 850, 2006 SV650, 1984 Yamaha Virago 1000 (all sold)
Silver Strom Club Member #11
Wee Farkles: Russell Day Long Seat, Madstad with Moose Adventure Shield +4'', SWMotech Centerstand, 1'' up & back bar risers, Givi XS308 Tankbag, Aprilia mirrors, Framesliders, Fenda Extenda, Elka Shock.