I would not suggest one limb over another, I think its tough to find a bad limb in the high end market. I will post some Uukha speeds and sounds later this evening.
The reality of it all is out of the super high end aggressive deep hook limbs there are only a few fps difference between them. The difference between these top tier limbs is Sound, Feel and Durability. A video or review cant help you with that.
Another thing to consider is how a limb feels on a specific riser. If you can perceive the subtle differences in limbs you will certainly feel a limb*riser interaction. All decent risers can be handled to shoot well but some shoot well naturally. Some risers may make a limb "noodly" The same limbs on another riser feel great.
When a backyard hero Schmuck like myself post a review that is or could be perceived as negative it is costing someone a sale. Don't trust any of us to give a great unbiased review or to suggest a perfect limb for you.
Here is my best crack at unbiased honesty:
Tradtech RC Extreme Limbs are great with a much better price point. These may be RCX re branded. "This is probably the best choice on the market dollar for dollar". Lancaster customer service is solid. If you dont like them or there is a defect send them back. 0 risk
W&W has several great limbs you can always get them used and dip them for hunting. "What I should have done 1st"
Hoyt- Same as above get a top of the line olympic limb used have it dipped and your good to go. "What I should have done 1st"
Uukha- Ill be honest I dont like the marks they develop on ILF rigs. If I were ILF only Id pass due to this or pad the contact point. I will be shooting DAS with them so it wont be a problem for me. If you own a WF-19 it loves X curves and they love the WF back. It is a awesome set up centered around pre load and balance.
There is talk of these not being durable because one guy was posting a pair that looked like they had been run through a wood chipper. Ive dropped mine several times. Banged it on a bow vice.. They are tough as nails. I have also hunted and shot these in -5 temp. They are rock solid.
There has been discussion of a few folks getting a crooked limb. Use LLA, or send it back to Lancaster for a refund or new set. 0 risk
Border 7.5s- Ive shot one pair, they are indeed fast and they expand well. I have not spent time with them to have an opinion. They push the envelope and they innovate. They are growing quickly and this may change Border. Its tough to go from a niche business to big and maintain your innovation and deep level of customer satisfaction. Having said that I assume they are growing for a reason. Ive never read a review or spoke to a owner of Border limbs where they were upset with performance
... There is a reason why Border is growing.
If you owned a set there is a trad subculture of Border fans. They are like a support group. They can and will help you tune shoot and work with you.
Max4s- I have no idea never shot em but Ive heard great things. If you had a quality issue I am 100% Bob would make it right.
If you were to purchase a set of Max4, Hex 7.5 and Uukha X curves; shoot each set, listen to each set be shot and drop each set out of a tree and drag it through the brush I think it would be easy for you to choose. If you cant afford to do that pay your money take your chances and dance with the girl you brought. Enjoy the journey.. The only certainty is you will spend money.