From 420cc Saline Hp to 700cc Saline Hp - Seattle, WA

It's been awhile since I've updated this. Some of you have questions, feedback and many helpful suggestions for me. So thank you to each and everyone of you. I will be writing a separate review for my newest BA, crediting the surgeon I used for the fix. Yes, I redid them. TWO in one year! But I am so very happy with my new results! I went with 800CC Silicone Gel and I love love love them!

I am 31 years old. 5'7", 130lbs, 10% body fat (very little natural breast tissue). In March, I went in for an implant exchange. I had saline high profile 420cc (approximately) submuscular. I was unhappy with my shape, and also wanted to go a bit bigger. The shape I was looking to have was to have more side boob. I truly hated the way my breasts looked from the side. My original implants were done well; I had no CC, no bottoming out, no lopsided or unevenness, a tiny bit of rippling (which is to be expected with saline, I am told). The cleavage was fine, they didn't touch; there was about a two finger space between them, but I was fine with that. Though they looked "fake", they didn't look like round balls attached to my ribcage.
So when I went in for my exchange with the following requests: bigger size, more side boob, and I was satisfied with my cleavage.
My new doctor suggested going with high profile saline again since I had good luck with them the first time. He said since I wanted a larger size, the width would be bigger anyways. We decided on 700cc. My current implants are mentor high profile saline 630 filled to 700cc submuscular. It's been 3 months and I've hated them everyday. Again, I've had no complications whatsoever. But I hate the placement and shape. Instead of the implants creating more fullness on the outsides like I wanted, I now have all the fullness in the cleavage area. If I look down at my cleavage, it looks like they are three inches thick on the cleavage side and about an inch thick on the outerboob side. I now have virtually no hourglass silhouette shape. My silhouette looks straight around my ribcage, almost like I have no boobs at all. But when I turn to the side, there they are!
The doctor who performed the surgery is no longer with the practice, so I've been discussing a revision with another dr in the practice. He is suggesting sientra cohesive gel textured shaped oval base in the 700cc to achieve the width and projection I desire. I'm a little hesitant since I'm having trouble finding before and afters with an oval implant. I'm just so unsure of what to do at this point, all I know is that I am so unhappy with what I have right now. Any suggestions or help would be greatly appreciated!