So how come you can get far better performing regulators that are not affected by their input pressure?The reason the minireg is set for lp air systems rather than both is, it gives a much more accurate and sustainable output if it only needs to cover a smaller pressure range. All angel miniregs can be adjusted to work with hp bottles.
Think of it as a sweet spot on a golf club, the larger the club the bigger the sweet spot. With the minireg the smaller the input pressure difference the larger the sweet spot will be.
Whats the tradeoff?