If the recessed light is over the shower and has a lens, typically, the highest incandescent is 40w and is awfully dim. If you go with LED conversion, get a 2700k (2700 kelvin). That mimics an incandescent bulb and they are rated for a wet location. I have gotten many 6" from Lowes. Have not gotten the 4" there. I do not think you will be disappointed with it (as long as it is not on a dimmer). I say this because even though some of the LED conversions are "dimmable" I have an issue in a kitchen where all of the lights flicker (twice), shut off and on (two or three times), then come back on. Good luck!

In candescents are no longer even available in Canada LEDsmake so much more sense and tthe fact is if you get the right bulb that horrible yellow cast that came from incandescent lighting no longer happens

definitely LED lights.

There are LEDs with warm light, the higher the Kelvins the more daylight they get. Perhaps a 5 watt 3000 kelvin would satisfy you.

Go with LED. There's a lot more choices now. We converted all our hose to LED and were amazed at how little energy they use