How many Shepard careers do you have/have had?

I know plenty of people have opted to stick with their one and only Shepard to have more attachment to their character and the storyline. But for me personally, ME2 is so rich with replay value that I find it near impossible to not constantly head back in with a new look, origin, gender, class and to play with a varying personality. 
 
So far I've currently got four Shepards: 
 
Vincent Shepard - My Ruthless Vanguard who's mostly renegade but still has shown some compassion at points. Love interests where Liara and Tali.
 
Jane Shepard - My Sole Surviving Infiltrator who's a total girl scout. Love interest was Liara and still is <3. Though she's had a few lapdances from Kelly.. 
 
Janet Shepard  - My Ruthless Adept who is also my Queen Bitch Shepard but I've played her in a way she's simply making the harsh choices to get the best out of the upcoming war. Love interest has only been Garrus, who also died during Janet's suicide mission =( 
 
John Shepard - The War Hero himself, initially played through as a Soldier but then headed back in as a Sentinel for my Insanity run. John's sort of the opposite of Vincent, very compassionate and sensitive though only having so much patience and has made a few rash choices. Love interest was Ashley, then Jack during my 1st ME2 playthrough, but now with his Sentinel lifestyle I think I may have him stay faithful this time. 
 
Even with those four I still plan of creating at least another Shepard, who'll be an Engineer, in ME1 to port over to ME2. If ME2 has shown anything it's that how every minute choice you make may still have just as minute repercussions in ME3 - which are still surprising to find even with them being as uneventful as they are. 
 
So I'm curious if most have also gone this route, trying out multiple Shepards and also how different they try to vary one Shepard's character from the other, instead of just, say, one for the Paragon choices and the other for the Renegade.