My opinoin?
ProJumps are great for their price and brilliant for learners, BUT there are better stilts on the market. The problem with ProJump is they sell G2 FlyingLocust, and here is where the problem lies. ProJump are a good company and I like them due to their affordable price and friendly staff, they simply picked the wrong company to buy from. FlyingLocust, who makes the stilts, is an utterly rubbish company. I can safely say their quality control is very bad and their customer care is not even worth thinking of. However, this is not the place for me to rant about FlyingLocust.
Basically, there are LOADS of brands on the market now.
poweriZer, ProJump, FlyJumper are all available in the UK and are all IDENTICLE DOWN TO THE LAST PART. They are all made by FlyingLocust in the same factory on the same production line. Don't think they are better because one is more expensive than the other, ProJump sell them for the cheapest and best offer, so if you want one of these, buy from them.
There are more expensive brands, poweriSers which come in at £250 and are better quality than the FL's, but I think the price difference is too high for you to really bother with them.
Then there are 7Leagues, which are £240. These are currently regarded as the better stilt in the UK, but again may be out of your price range.
I have been lucky enough to try poweriSers (owned a pair for a year, they were very good), ProJumps (Tried a friend's, these were G1's though, I have yet to try G2's) and 7Leagues (Now own these), and IMO 7Leauges are the better stilt for an EXPERIENCED bocker. They have a different centre of gravity and spring quality, the overall build is different. They are seriously the BEST stilt on the market in the uk bar powerskips, but if you are new to the sport and are unsure what you want to do with them or even if you will like it, get ProJumps. They are the cheaper set and will introduce you to the sport quite well.