Having owned & used this bench regularly for nearly two years I can confirm that it is a very good quality product, & a good choice for a home gym. It is large, heavy, very stable, robustly built, & easily handles far in excess of the loads that most home weight trainers will place on it.
Regarding some of the negative reviews, although the barbell support posts are fairly close together, they are farther apart than many home benches, and the dimensions work well with a traditional exercise bar (ie 5 foot long, 1 inch diameter). When using a bar of this type (as the vast majority of home trainees are likely to be doing) the posts sit towards the outside edges of the knurling, ie alongside the user's hands. Clearly everyone's ergonomics will be different but for myself at 5'11'' the posts are close to the hands but not sufficiently so as to be a problem. Incidentally, if the position of the posts were widened, little clearance, if any, would be left between the posts & the weight plates positioned on the barbell. This could cause difficulty if replacing the barbell at the end of a heavy set required very precise co-ordination.
It's also worth noting that for the home user the 540 has the significant benefit of versatility. The seat incline is adjustable and the bench can be folded to save space. The tall posts allow squats to be performed, & it can be paired with a lat pulldown attachment (although not folded at the same time) providing a platform on which the whole body to be trained effectively.
If the user wants a bench with very widely positioned support posts I would recommend they buy an Olympic bench (& the Olympic bar & weight plates to go with it). However, if they are specifically interested in this type of product they are likely to either have a particular interest in performing a very heavy bench press, or to have progressed well beyond the level of most home weight trainers & are likely to own a separate squat rack or similar.
Finally, I would recommend this bench to anyone looking for a qood quality, heavy duty bench on which to perform a wide range of exercises in a home gym environment. Understand what it is & how it does it. Decide what you actually require from a bench, & select the product that will suit you best.