The Chill R will be slightly faster but not much. The X will have a nicer draw and transition into the valley. The 75s aren't nearly as aggressive on the X. I have seen a 10-12 fps difference from the 75% to the 85% on the X Sent from my iPhone using Tapatalk
I have the chill SDX, and I guess it's not the same because of it's size but it's the (small draw x)...I love it I have the 85% let off rock mods on it and I love the whole rig. You can't go wrong with that bow. I would have gotten it but it's definitely too big for me and the SDX fits me perfectly.
The new addition! I'm really likeing it so far, I need to play with stab weights some more but it tuned nice and easy.
What's a better grip to get? I like the focus grip but I want something more adjustable that I can tune to my hand. It will be going on the chill x I'm getting.
I really like the Focus grip so I have not tried any others, I used to put Tourqeless grips on all My Mathews until they come out with the Focus grip.
I also like the focus grip on my htr but I want something I can change to get a little better fit for how I shoot
The HDA Grip is the best grip for Mathews bows if you want something adjustable. They're pricey but worth it. I use Shrewd a lot too but they're not adjustable. The Focus is alright, I've hunted with it in the past but I get more side to side "wiggle" with it.