Fusion RA50 vs RA205

[CHANCE1234]

20' CC. I'm only going to have two speakers facing towards the console with no amp as I usually fish solo. What are the major performance differences between these two stereos? The RA50 is over $125 cheaper on Amazon but I don't want to sacrifice too much. I'll use it for am/fm and Bluetooth via an iPod the other times. The only NEMA 2000 device on the boat is the Suzuki SMIS gauge. I will be going with 2 JL MX650 speakers which are capable of handling 60 watts each. The RA205 is capable of sending 50 watts per speaker where the RA50 is only capable of sending 40 watts per speaker. Is that 10 watts difference between the two radios enough for me to realize/hear the difference? Thanks for the help as I have no idea what 10 watts difference would sound like it. Figured someone might know some technical stuff... Thanks