I'm a Bal girl at heart. I just start looking into Chanel earlier this year and hurried myself to build up a collection just before the price increase in June.
Like some other said, Bal and Chanel are totally different. For me, Bal gives out the free spirited look while Chanel send a very prim and dress up message. I'm more of the regular hardware Bal though.
I find myself more relax with Bal while I feel like I have to be more careful with my flaps. And I'm more self conscious more carrying a flaps since that interlocking CC is so well recognized. So I wear my flaps to the dressy places only and wear my Bal anywhere else.
However, the heart wants what the heart wants. Don't force yourself into loving something because of whatever you think so "logical". You won't win it. Chances are you will sell off your Bal at a loss then go back to Chanel. You have to love it to carry it. With that said, have you ever try one on?
Try something more dressy and lady-like such as Dior or Celine if you want to spend less on your bags. You may find it's more of your comfort zone. Or sticking with Chanel but buy less and pick only the piece you really like. Don't impulse buy.
I think Balenciaga is a great brand and their handbags are great. But don't buy any if you think it's just for the sake of price.