I did a fair bit of research before buying this particular trolley. There are others out there, but I needed something to take my backline and PA in one go. This does not disappoint. I calculated how much space my gear would occupy when 'stacked' and decided that the R6 would take the lot (other sizes are available). It's taken me some time to get the most from it - I've had to get some ramps made from aluminium tread-plate at a local metal works, but now I'm good to go anywhere. As I can often park quite close to the venue, I find that it doesn't suit every gig, as unfolding and loading the trolley can sometimes take longer than simply loading-in manually. However, it's been an absolute 'must have' in certain circumstances - especially at a couple of recent gigs where the venue was on the first floor. Once loaded, I could simply roll into the service elevator and roll straight out into the venue - no hassle. The trolley itself seems sturdy enough and, whilst it exhibits a certain amount of 'flex' when loaded, it certainly seems strong enough. The wheels are good, but I would recommend going easy on the front ones over bumpy surfaces. It has a useful spring-loaded 'button' which engages into a hole when the trolley is fully extended. This helps prevent you from over-extending which would over-stress the trolley. I wish it also had some additional incremental holes, as I sometimes don't need it to be 'full length', but that's just a 'nice-to-have'. Overall I'm very pleased with my purchase and certainly couldnt find anything this useful at anywhere near the same price. For reference, it takes 2 x10" active PA speakers + mixer (bagged), small bass combo, stool, speaker stands, bass guitar and a large case full of leads.