MTG Salvation

I am overly active on this now that I got the wheels turning. So I thought I'd make a place to ask dumb and odd questions about cards that make cube's special

Here are my first 2 questions:

1) Obelisks or Mana Myrs?

2) Should every color have a pinger? If you don't know what I am talking about here are the options

Green: Thorn Thallid
White: Zealot il-Vec
Black: Cuombajj Witches, Cabal Torturer
Artifact: Serrated Arrows, Viridian Longbow
Blue and Red have more than enough options

If I had to choose, Mana Myrs, Signets are better than them (and definitely better than Obelisks) and there are cards like Darksteel Ingot that are better at 3 mana.

Every color shouldn't necessarily have a pinger, just if they're among the most efficient cards in the color (IE no on Thorn Thallid, yes on Vulshok Sorcerer.)

is obelisks + borderposts + ingot/prismatic lens + signets too much in an 8 man?

I don't think so, but if you do, I'd run more artifact destruction like Ingot Chewer, Keldon Vandals and the like to cripple decks that use them a lot.

[edit - actually, I'd cut Obelisks, I don't think that they're good enough.]

already do. Have ancient grudge, chewer, and I think i cut vandal b/c it felt too over the top. should i put it back? I know Shattering Pulse would be cheating.

I put a huge emphasis on land cycling and fixing so you can play anything

Loch Korrigan, Shade's Form, or Darkling Stalker? Looming Shade and Grimclaw Bats are also a choice but I am not sure about their use.

I just found out that my previous choice of Carrion Ants is not common.. that sucked.

I would pose a follow up, Is Pump Overrated or Less Applicable in a cube that promotes multicolor?