I used to love matchpoints and thought that IMPs was for wimps.   Now I play IMPs all the time (maybe I've become a wimp in my old age) and don't really miss the bipolar nature of matchpoints (all tops and bottoms, all the time.) 

I messed up the auction on this hand with Adam yesterday.

I picked up all white:

4 / Q8763 / T4 / QT762

Righty opened 1 Spade.

Jeff likes to play that all Michaels and unusual NT bids promise an opening hand.  I think he's nuts and that we might as well play strong 2's as have such a restrictive agreement.  So our compromise is that when we're vulnerable they show an opening hand. 

Fortunately, I had no such agreement with Adam, and if I had bid 2 Spades, we would have gotten most of the matchpoints.  But no, I reluctantly decided that maybe there was SOME truth to the idea that I am too undisciplined, and passed.

Lefty (a LOL) bid 4 Spades and Adam bid 4NT, passed to me.

Now what?  If 5 Clubs, lefty bids 5 Spades, passed back around to you.  Do you bid 6 Clubs?  Do you double?  What do you lead if you pass or double?

At IMPs, I think you have to bid one more for the road.   Surely it's likely that someone can make something and 6 Clubs (conceivably 6 Hearts) won't go for more than 500 and maybe a lot less.  If it's a phantom, it's probably -100 vs +50 or something.

At matchpoints, if you bid 6 Clubs you've already lost the board to the folks in 5 Clubs and if it's a phantom, you're stuck with a zero.  I tanked, decided that partner had already done good work by bumping them up a level, dropped a green card on the table and stabbed a diamond.

The good news is that if you lead a diamond, pard gets his aq of diamonds and he's got a heart void so can ruff a heart.  The bad news is that you can't lead a diamond AND a heart. 

Dummy was

K965 / AKJ52 / K6 / A9

That's a heckuva 4 Spade bid.  Fixed again by LOL's.

Adam held

3 / - / AQJ953 / KJ8543

-450 was worth half a matchpoint.