If influence is a big deciding factor, go SR,
Yes DA is End hungry, but it's survivability is sound, however, to push it right up there to the same degree is going to cost you.
SR will give you an inherent +rech and can be softcapped with just a few small IOs, add Aid Self and you're golden.
While SR can do some amazing things DA is my choice for a secondary when teaming. The stun and/or fear to me feels like I'm contributing more than just damage.
With just SOs DA has a lot of survivability, but with how fast SR can hit the soft cap it can take a lot of work to push DA to the point it can do some of the crazier things.
Poisonous Ice 50 Ice/Rad
Icy Jax 50 Ice/SS
Jaxon Penn 50 Shield/Mace
Cpt Clax 50 Thugs/Dark
Lady BlackIce 50 Dark/Cold
Lady Black Ice 50 Dark/Ice
Bella Jax 50 Storm/Sonic
Operative Jax 50 SoA
Level 50 Trick Arrow Alts
TA/A-Plant/TA-Bots/TA
Level 50 Claws Scrappers
SR-Regen-DA-Invul-WP-FA
Everything you said makes me want to steer you to Claws/SR.
Great synergy with fast attacks being aided by quickness, easy on endurance and AV capable with less inf spent. If you choose to go with a long term expensive build you can really get some cool stuff done. Taking Aid Self is very sound advice though, at least in the AV arena.
Very few sets have such a cool concept look as Claws/DA to me though. It's just personal preference but I think they're cool together. I've never played them, though I'd imagine Claws cheaper endurance costs might offset DA's endurance woes. However, soft capping that combination to melee is going to prove troublesome I think.
P.S. I say "though" too much though.
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Everything you said makes me want to steer you to Claws/SR.
Very few sets have such a cool concept look as Claws/DA to me though. It's just personal preference but I think they're cool together. I've never played them, though I'd imagine Claws cheaper endurance costs might offset DA's endurance woes. However, soft capping that combination to melee is going to prove troublesome I think.
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Thanks for the advice guys. I decided to go with Claws/DA. SR was extremely tempting due to everything you've said and the ease of softcapping...but I rolled up a Claws/DA just to try out and love the look.
I am most conflicted when my inner min-maxxer disagrees with my creative and aesthetic sense. So, as you said Powerforge, the look got me. I'll just have to save up more inf to make my inner min-maxxer happy. 
Greetings!
I have little experience with the above-mentioned sets and their possible synergy, though I am a vet on all the others but FA/, and so I will humbly request the knowledge of those more experienced than I in these areas.
I have a concept for a -/DA toon as the shadowy animations work well for it, however -/SR is tempting due to it's relativly easy and inexpensive def softcapping. Prior to my 3 year leave from CoX, -/DA was terribly end hungry and not all that great besides, though this seems to have changed quite a bit. I have read the few /DA and Claws/ guides, as well as the singular Dual Blades guide. All good info, however I was wondering about the synergy for DB/DA and whether it is end heavy, as well as dps, AV solo capability, and survivability comparisons between Claws/SR, Claws/DA, and DB/DA.
I will only be doing PVE and soloing quite a bit, though I will duo/team intermittantly. I enjoy soloing AVs and am a min/maxxer by nature. I currently don't have a ton of inf to spare as my main (44 BS/WP) is currently sucking my funds away as I try to save for the Numi, Miracle, LotG, and Kismet uniqes.
Input and opinion appriciated, especially backed by number crunching goodness. :-)
Gaidin