So your comparison equates to---ACR=vz2008 is the cheap version of the SCAR= csa/czechpoint vz58... 
Yep, accordingly to your logic.
I have not shot either, but the consensus of those who have is resoundingly pro SCAR and its +15-20% pricetag over the ACR. As much polymer as there is on these "modern" rifles really only makes sense for those who carry a rifle day to day; primary advantage is reduced manufacturing costs and weight savings... Great for operators. Not so great for those of us who want to only buy once...
Where I'm coming from -- I drive a 22 year old Toyota Pickup (true American Hilux) and almost everything functional plastic/rubber I've had to replaced due to becoming brittle and failing with age or stuff on the dash and whatnot breaking when I move them/need to work behind them (unless I'm super careful -- and I run 303 aerospace protectorants on all the plastics on my rig too w/ sunshade up all the time not driving; at just over 150k miles don't drive it a lot of miles), other than plastics/rubber the second most replaced stuff are electronics -- when I purchase a firearm, I want something that'll outlive me (I'm 30) and can't imagine that any of these modern polymer weapons would do so. The one polymer weapon I'm looking at is the Archangel 10/22 g36 aftermarket stock/furniture setup -- for all intents a disposable firearm... Polymer mags I don't mind b/c they're for all intents disposable anyways, but polymer weapons -- no thanks.
As far as bullpups, I only find they're preferable to standard configuration rifles in CQB/urban conflict scenarios for all the reasons mentioned here:
http://anarchangel.blogspot.com/2005/03/why-bullpups-are-persistently-bad-idea.htmlIf I need compact, I think it's preferable to reach for a grip-based mag pistol carbine like the Keltec Sub 2k that are more compact than most short barreled rifle configurations, excepting bullpups, deliver almost the same energy as equivalent length SBRs, and have heavier cartridges designed that are designed for low-speed performance... For civilian me, it works, so I haven't paid any attention to the Tavor.
Was recently looking at possibly building a microgalil, but decided to go w/ an SAR instead. That research/thought process here:
http://www.uzitalk.com/forums/showthread.php?74783-Micro-Galil-Utility-amp-PurposesQuickly, here are the length comparisons.
VZ2008 (16.1" barrel) - 35" long open
VZ58 (15.4" barrel) - 33.3" long open
Tavor full (18" barrel) - 28.5" long
Tavor compact (15" barrel) - 25.2" long
Keltec Sub 2k (16" barrel) - 29.5" long open
Microgalil (8" barrel) - 27.8" long open
Galil SAR (13" barrel) - 33.5" long open
Galil AR/ARM (18" barrel) - 38.5" long open
M4 military (14.5" barrel) - 33" long stock extended, 29.75" stock retracted
Bushmaster M4 (16" barrel) - 35" long stock extended, 31.5" stock retracted
M1 carbine (18" barrel) - 35.6" long
And if money were no object, which it is for me, the $900+ Uzi would be a strong contender to the Keltec for a pistol-based carbine role -- and would win out for me over the aluminum Keltec Sub9 which cost about the same as any non-Century Uzi.
The add'l high points of discussion are muzzle blast/flash/concussion and point blank energy of cost-effective commercial loading. For indoors, the pistol carbine wins out over an SBR and bullpups would likely win on the sum of the merits if taken into consideration.
But ultimately, I found your diversion of the thread preposterous and was trying to add some similarly preposterous humor to the mix. Apologies to the admin for the referee. Was intended in good fun. Won't add any further discussion here. Thanks!
