TopSpeed Pro 1 vs. TopSpeed Straight Exhaust. Difference?

[DeadBread]

Hey guys,

been debating between three different brands that have "muffler delete exhaust pipes" I'm interested in. STM, AAM, and Top Speed.

STM muffler delete pipes:
STM: STM 370Z STAINLESS STEEL AXLE-BACK EXHAUST / MUFFLER DELETE | STM-370Z-AXLBK

AAM muffler delete pipes:
AAM Competition - Nissan GT-R, 370Z Turbo Performance Specialists

^ ^ ^ Those two brands and the links to the specific exhaust I'm looking at, really clash head to head for me. I'm leaning more towards STM, but to be honest they're practically the same ****.

But then I found Top Speed!

Top Speed is interesting, because instead of having only one muffler delete exhaust pipe to compete with STM and AAM, it would appear that they have two pipes that are also $100 cheaper (also the same price). The problem is, I don't know the difference between the "Pro 1 Axle-back" and the "Straight Exhaust".

Top Speed Pro 1 Axle-back:
Nissan 370Z 370GT VQ37VHR 09-15 Top Speed Pro 1 Axle-back Dual Exhaust Systems

Top Speed Straight Exhaust Axle-back:
NISSAN 370Z Z34 BASE & NISMO 09-14, Infiniti G37 VQ37VHR 09-14, 370GT COUPE 09-14, Q60 COUPE 14-16, Dual Axle-back Straight Exhaust System (Bevel Edge Tips

The "Pro 1" looks to be a similar version of STM's and AAM's resonated muffler delete exhaust... however, it's not advertised as such and is, again, the same price as it's thinner "Straight Exhaust" brother. My question is, what are the differences between the Pro 1 and the Straight Exhaust? Because at this point, I'm really intrigued by the price of these pipes and I'm set on buying either one, just need to figure out exactly which one.

Let me know your thoughts... and please understand that I'm NOT looking into spending top dollar on a whole new full exhaust setup (as of rn), which is why I'm only looking into this alternative that MUST be done. My ear-boner begs to be released from this stock oem muffler cuck torture!!!