The pulley system with the PRO multiplier is perfect even for very long slackline. I use 25:1 system to tension my highline of 65m long (nylon webbing) and with this system, the tensioning is so easy (even 15:1 is often enough) . Very lightweight system. Perfect for women that want to tension alone a highline (for men also ;] )
I bought this about 1 month ago the power/weight ratio is really nice, already has tension several long lines in the100m+ lengths with no effort. The use is intuitive and efficient, I really recommend this piece of gear.
Perfect
I bough the BLNC 5:1 Pulley System as an addition to my PRO 9:1 Pulley System. The size and weight of this system are impressive (It's so light that you nearly forget that it is already in your backpack). The overall built quality is also great. I use it mainly for my everyday lines (25 to 60 m), but it's also amazing for highline projects (If you need more tension than you can get with a hangover/rollex system or if you simply don't want to buy an extra highline system).
Because of its versatility the BLNC 5:1 Pulley System is probably one of the best pulley systems for people that are new in the slackline world. I personally love it and can therefore recommend it to everyone, that is looking for a compact & lightweight pully system.
I'm using this pulley system for several months now and love it. Taking it with me is a no-brainer. Small and lightweight. Handling is easy. I barely need the 15:1 multiplier and have never needed the 25:1. Personally, I really prefer that setup over a Hangover (or 2) + Softrelease. Easier to handle, not much difference in weight and space. Makes it easy to adjust the tension according to each person that is walking. Also it's an eye-catcher :-)