Hey,
For commuting try a recumbent. I just switched from a road bike. Loving every minute of it. A bit slower on hills but with less effort. Headwinds are less of an issue and on the flats you can really cruise. Also motorists seem to be more tolerant. Nice and comfy. No more sore anythings. You can hang a backpack over the seat back. Easier than carrying it on your back. Works different muscle groups too.
'bent Brian