French Link or Oval Mouth Loose Ring Snaffle?

I took a lesson with a new trainer today, and she suggested that I start using a french link loose ring snaffle. I currently ride in a Dee-Ring straight bar snaffle with a roller in the middle. I was already going to buy a Oval Mouth Loose Ring Snaffle for my gelding, so I was hoping I could just change the order to 2 snaffles. Is there really a huge difference between the french link and the oval?

Oval loose ring snaffle I want:

Not really except that the french link has a flat piece in the middle instead of a rounded one. :')

The oval or bean mouth puts a tad bit of pressure in the middle of the tongue, where the french link puts hardly any. That's the only difference. I have used both on my mare and I prefer the oval/bean mouth.

I also prefer the oval loose ring. I use one for dressage.
My horse prefers a thicker bit.

Agreed with above, I prefer the oval mouth to the french link... but good on you for getting a double jointed bit!!