It all depends on what you are good at or what suits your personality best.
For me,personally, I use my TCredits up mostly on Knockout Trivia, because my general knowledge is, without boasting, above average, allowing me to win a share in the zackpot once or twice a week, which refills my store of TCredits. If you are a runner up you also get EZ credits, which allow you to play free when a TCredit is otherwise required or when you have already used up the number of allowable games for the day. Every time I play I get 1 VP and on average 15-20 MRP - much more when you play Big Dog and Double MRP games. So much so, that the buildup in MRP usually allows me to buy 1 share in S-Builder Co-op every month for 3429 MRP and build up my team.
With the other Eager Zebra games, I think too much luck is involved.
Bidding on Pricebenders Auctions requires a lot of skill and a lot of practice. Otherwise you are just wasting your TCredits. You do however pick up 1 VP for every bid and 5 MRP, so if you are looking at ways to increase your VP to re-qualify for whatever rank you are seeking, you can very quickly build your VP by bidding on the auctions.
The maximum VP on Eager Zebra games is 200 and on bidding on Pricebender Auctions is 500 VP, but when you combine them with your Daily Actions for over 300 VP a month, you can buy your way to at least qualify as BTL, which is what I try to do.
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It all depends on what you are good at or what suits your personality best.
For me,personally, I use my TCredits up mostly on Knockout Trivia, because my general knowledge is, without boasting, above average, allowing me to win a share in the zackpot once or twice a week, which refills my store of TCredits. If you are a runner up you also get EZ credits, which allow you to play free when a TCredit is otherwise required or when you have already used up the number of allowable games for
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