Oops! Seer has a bike! My bad
Hmm I see no love for wave serpents. Wave serpents can withstand much more fire than a venom, and can actually hurt vehicles. As I don't run blasterborn (I feel restricted by only moving 6" with a fast skimmer) I don't really take advantage of open-top that much.
Another thing that a serpent can do that a venom can't is tank shocking. The
WS measures 6"x4" which is enough to knock any infantry off an objective. Considering vehicles can't score (in most games) this is extremely valuable.
But anyway, this isn't a justify-the-wave-serpent thread. I started
40k mid-5th as an eldar player, so I guess I'm still very eldar-minded. The venom spam and raider spam just doesn't appeal to me very much. I know they're effective, but I'm good at using my fast skimmers eldar-style. I'll use it as a crutch until I master
DE suicide tactics...or better yet maybe use both?
As for spiders, their T4 and 12" range has always been an issue for me. I had them in my last list but they didn't mesh well with the rest of my army. They need to get a bit too close for my liking. For 22 points I'd rather take a scoring jetbike with higher toughness. But that's just me
Warp spider wound on t4: 1.11
GJB wound on t4: 0.75
Same range, Same mobility (less the 1/6 chance of suicide),
GJB is scoring and has a 5+ cover save. Ability to turbo-boost. On the flip side, spiders are better
AT. But I have enough s6 shooting. I prefer my 1 wave serpent to 5 spiders.
Serpent: 3.75 wounds
5 spiders: 6.7 wounds
Serpent is immune to s5 and below, 2x the range, ability to tank shock, ability to make mobile cover, Can flat out for a total 30" move. Spiders can claim cover saves (but serpents have 5+ jink). They can do different things. I just don't think spiders are needed in my list.
As for the survivability of
GJB, with fortune they are tougher to kill than terminators.