Big bullpup fan. I'm on my 3rd AUG, the first two were pre-bans; a 901 or 902SA, and the last was one of the few green 906SAs imported with much of the later improvements (bolt roller, etc). My current AUG is a super early Sabre-made A3; replaced the factory short rail with the "military" rail, which is taller and designed for the Steyr scope (not the classic one, but
this one). The first photo on that page shows the military rail; subsequent photos show the shorter 'civilian' rail most of them were imported/sold with.
It wasn't until recently that Steyr finally started bringing in suppressor gas plugs for the AUG...which makes it so much more flexible IMO. AUGs are very over-gassed normally (honestly, most piston guns are)...that plug fixes some things and actually makes it so running one with a can won't beat it to death or break parts. Plus my AUG is early enough in the A3 series to still have the Steyr 13x1LH threading I think it was...I was able to pick up an AAC 51t mount for the thread pattern to mount my M4-2k to it, before AAC went away. That was another gotcha of the AUG...
Anyway!
I'd love to get my hands on and try the VHS/Hellion. The adjustable LOP, the quickly tunable gas plug from the factory, reversable ejection without needing a new bolt and to strip the stock to reconfigure the ejection ports, it even comes with backup sights...and the charging handle doesn't seem like it would strip your hand of it's skin if you grab it the wrong way, like an AUG with a top rail or scope nuts on the left side will. Plus, it uses AR-pattern mags. Even though AUG mags are arguably better in most every way...except price. Fortunately I have a ton of both AUG and AR mags anyway...
Yeah, it's expensive, but variety is the spice of life. AUG parts aren't getting cheaper, and while being able to swap barrels is awesome....try finding a 16" 1/7 barrel these days. They were a short run/imported item and now command stupid prices if you can find one. I have an original AUG 14" "Commando" barrel squirreled away somewhere and those are worth easily 3-5x what I paid for it when they were imported back in 2002 or 2003 or so.
Then again...every time I think about picking up another piston-driven gun, or another bullpup, my mind goes "wait - you spent a whole wad of money on an AUG, which is probably better than that thing...and you should use it more, anyway..."