In terms of a Starter Deck for newcomers, both work well and are easy to pick up and learn
Arachnus Spinner only has one copy of Arachnus Web to work with in Commander, but the Spinner lets you recycle that copy from the graveyard
Urza ThopterSword (2 players): After sacrificing Sword of the Meek to Thopter Foundry, the created Thopter token brings back the Sword, allowing you to create a Thopter for every mana you have, and the addition of Urza, Lord High Artificer allows you to go infinite
Upgrading the Angels: They're Just Like Us but Cooler and with Wings Commander Precon Tally ho, cathars
Animate Dead, meanwhile, is a card I like more and more these days, as it offers ways to cheat the cost of expensive commanders while having utility outside of that
The restriction on historic land hurts, but there are some legendary lands and artifact lands to make up for it