Thanks, that's a good point about Scavenging Ooze. I was already unsure about Gifts as the deck is expensive and you can't really half arse the manabase.
What's stopping tap out, is it all the combo? I was thinking 2 of Elspeth, Gideon, 3 mana Jace and maybe Sorin but to be honest it's not that high on my list yet.
I'd forgotten about the control version of Twin but I don't really want to play combo, I'd rather use those 10+ slots on making sure I'm in control.
I priced up U/W at ~£300 which isn't too bad when a playset on Cryptic Commands is £100. I think all the other options would be significantly more expensive as they need fetches, but a lot of the cards in U/W are staples that are good to have.
The other option was Storm, which seems cheap except for the Scalding Tarns
It's really going to depend what your meta is like, tapping out on your turn with a control deck isn't really what you want to be doing.