I have been using these:
M4 EliteAfter going though several different types I found these to be the best for my fixtures. The LED's used are much brighter than the cheap Ebay ones but are a bit thicker. The larger ones will not fit in mine but may in yours...all depends. Also many bulbs have pins that are a hair to thick to easily fit the sockets....again all depends.
I found that finding one that looks good on paper than just buying one or two to check them out worked best, You may also find that removing the puck light from the ceiling may be the easiest way to get the new bulb into the socket.
Dick
2002 43' DP Beaver Marquis Emerald Cat C-12 505 HP, 1600 Tq
2003 Jeep Grand Cherokee Overland ---toad