Have any of you guys seen a difference in these two baits in effectiveness of catching fish and which one do you prefer over the other?

I seem to catch bigger fish, but less fish on the 2.5's. I prefer the 4S or 2.0's as I call em over all of them.

I really like the 4s as it doesn't dive as deep but it isn't readily available to me. the kvds are 3-6 and the 4s is 2-4. the 1.5 is a great bait though when fishing flooded rip rap

I like them better than the KVD's in some situations. #1 is when pike are chomping, KVD's are cheap................series 1 and 4s are cheaper. I also think they both come through grass better than the KVDs