The LPB-1 is cheap but from what I understand,...not completely transparent. It's still a pedal I'm interested in checking out and would probably be just fine for my non-audiophile ears and live applications.
There are a lot of boutique boosters out there that are TBP and hella spendy for what they are but are supposed to be quite good in build and sound quality; if you can justify the cost.
If you have an unused disto/OD pedal like a DS-1,...etc,...you can set the gain completely off, turn the level up and get a clean boost out of it. May not be completely transparent,...but is an easy solution.