My first set of pipe bombs were the intermediate 2.75", which wound up being more challenging than expected. The intermediate bombs provide a "just right" challenge for me. I climb at a V3/V4 level at the gym and am 6'4", so the intermediate pipe bombs are a good fit for my hand size and skill level. However, the intermediate pipe bombs are too thick for my wife and 7 year old son, so I purchased these to have more versatility with the training course. I've set up our basement obstacle course to include various Atomik bombs hanging from the ceiling rafters. I have the bombs attached with the shortest dynext slings (8") so that they are close enough to the rafters that you can easily transfer to other climbing holds that I've directly bolted onto the rafters to create an overhang route of sorts. Highly recommended.