Are mini pump manufacturers just making it up as they go along, or is there some actual science behind determining the right one for a specific gear system? I mean, seriously, how many of you have actually used a mini pump that didnt leave you feeling like youre trying to inflate a tire with a toy? Ive got a high-end road bike with Shimano Ultegra and Im starting to think that the pump manufacturers are just guessing when it comes to recommending a pump for my specific setup. Ive tried a few different ones and they all seem to have a different idea of what high pressure means. Do I really need to spend $100 on a pump just to get a decent inflation? Cant someone just give me a straight answer on how to determine the right mini pump for my bikes gear system without trying to sell me something? Is it really that complicated? Or are we all just being taken for a ride by the industry?