Best compatible GPU for under $55?

I'm currently looking at MSI's GT 740 (1GB GDDR5), as it's $54.99 (after a $30 mail-in rebate). Is there anything that's better at a similar price (after any rebates)? It seems hard to beat that particular deal. My upcoming build won't be used for anything too major, so that GT 740 should be fine. Just looking for some other thoughts (if any).

I would grab that deal while it's still around. If not there may still be some 640's available
for less which give you similar performance to the 740. The lowest price of a GT640 AR
I've seen is about 40 USD.