Although its true you have to be more straight to hook up, you have about 10-15 degrees to play with and it has never been a problem.
Unlocking lever is the same is very strong however the locking jaws are totally different in the pullrite compared to the valley. At times i would have to beat the unlocking level on the valley with a hammer to get it to disengague (on a slightly un level surface). The last thing you want is to be in the bed of your truck hitting your hitch with a wood block.
The trailer he's selling probally does have improvements in the front end cap design that allow for more clearance and an extended king pin will help. But it will still contact in a very tight turn? i wouldnt want to worry about that when pulling into a tight parking lot in the middle of the night when its raining. With my babies in the back seat crying and the little lady nagging from the passenger seat the last thing i need to stress about is if my $45K truck is going to hit my $45K trailer.
Ive had both hitches (only two ive ever had) and IMO the pullrite is worth the $ and then some. I will not go to another brand.
The auto slider is key, but the build quality is very good, better than Valley. Thicker, more heavy duty materials. The locking jaws are a better design in the superglide, it holds the king pin tighter eliminating forward and back movement inside the locking jaws. The lack of the jarring slamming every time i accelerate or brake from the slop in the king pin locking jaws is reason enough to get the pullrite.
I did not like the way the valley hitch rolled on thier ralls and the under side of the metal that wraps around the rail has a set screw with a locking nut to hold it tight, this eventually wore a grove in the underside of the rail and broke off, causing the hitch to not lock in the rear position. Because i couldnt lock it I had to try and back in to a tight camping sapce avoid several trees at dusk. Even with two people spotting the clearence i still dented the cab.
The rail kit is outstanding. I used to hate the rails bolted to my bed, now i have 4, 2" holes in my bed, which is very clean looking. The only draw back to the pullrite is its heavy to load and unload (but its heavy duty) and you can not hook up to a standard king pin with out an adapter plate. (say you wanted to help a friend move his trailer)
When my last truck and trailer combo was totaled in a roll over accident the valley hitch held the king pin no problem, but the rail ripped from the bed and was hanging on by one bolt. I think the pull rite system is a better design and think it would have held up better.
All this means nothing, its up to you. Your doing the right thing, which i did not do and learning about the options.