I have been reading reviews on bodylastics but have not seen any good comparisons to Lifeline USA products. So here is my take on both products. I tried the Lifeline USA TNT bands and they are far cleaner design. My main problem with them is that the weight advertised is 40lbs a band and with all 3 bands it should be 120lb, but that is not true at all. With all three bands it felt more like 30lbs. The design is very easy to do all band exercises and comfortable to use. I like them but the cost of additional bands to make more resistance is too expensive.The bands are top notch, i can even say they are higher quality than the bodylastics.
I am not saying bodylastics bands are bad either. They are just very clunky design, the vinyl strap that holds the clip and band gets in the way of almost every exercise and is very uncomfortable to use. You have you have to adjust your form to make them not scratch you. The handles compared to the hard handles of Lifeline don't feel like great while doing exercises. The praise for bodylastics comes from the bands, they are labeled and do feel like the weight labeled. The Black band which is 23lbs feels like 23lbs on each side and all the bands together do feel like 60ish lbs since they are actually difficult to curl. For the resistance/cost, it does beat Lifeline.
I would like for bodylastics to develop a hard handle like Lifeline since it may improve use of the cables. The Accessories seem kinda dinky, with loose strings all over the place. I can forgive that since it comes with so many bands.
Overall its a decent product but the quality seems to be beat by Lifeline, I will most likely want to use both products since they both each have their own benefits.
Bodylastics
pros: Band resistance is very close to rating, lots of accessories, lots of bands to make different weights, decent price
Cons: Clunky design, materials could be better
Lifeline USA
Pros: clean design, easy to do exercises, material quality is very high such as the handles and the bands, its cheaper but less resistance
Cons: band resistance rating is not accurate, additional bands cost more, only 3 bands at a time.
Well those are my 2 cents on these two products.