Stihl MS880, FTW! (Just kidding.)
If you were my neighbor, I'd let you try my saws (Stihl, Husqvarna, Dolmar, Mac) to show you differences and get a feel for what you like.
Money no object for the average homeowner? Get a 50cc pro saw (.325 pitch, .050 gauge, 16" or 18" bar) from your local Stihl or Husqvarna dealer.
Money limited? Still go to your local dealer and have them show you some models and get a feel for weight, balance, etc.
Regardless of what saw you decide to get (or borrow, rent, etc), remember to budget for that PPE, as mentioned earlier. A nice $60-70 pair of chaps is good insurance against a $1000+ emergency room visit (or worse). I've tried many brands & models, and right now am a big fan of Labonville full-wrap chaps.
Also note that electric chainsaws are just as dangerous as gas saws and sometimes even more dangerous. Chaps don't stop them as easily as they stop gas saws.