getting real bike shorts will take your ride from good to great. For affordable, high quality shorts I always reccommend people check out
Aerotech Designs!
• Affordable
• American Made (in PA I believe?)
• Very high quality
• Great customer service
• Sizes from small to 4 or 5XL (because they understand that cyclists come in ALL shapes and sizes; I respect that)
I've got 2 pairs of the standard shorts and 4 or 5 pairs of the Pro shorts and my wife (who is an Athena AKA: a big girl cyclist) has a few pairs of their womens shorts too. I've been super-happy with all of them. If you can swing it the pro shorts are noticeably nicer than the standard shorts but any of their products are great!
Disclosure: I have no affiliation with Aerotech Designs other than being a very satisfied repeat customer