I think the best TC product for standing order is the 125 TCredit pack. You get the 1500VP to keep you at EA monthly, but TCredits are like cash. I use my credits to bid on auctions in hopes of winning, obviously, but also to boost my action VP. You can use them for making purchases at TripleClicks, thereby adding to your VP total.
You really can't have too many TCredits in your account.