Hi all. Casual road cyclist here looking for some recommendations. Definitely a newbie when it comes to specifics about parts. Trying to upgrade parts of my vintage bikes. Thinking mostly about upgrading wheels/tires for now, but that's because I don't have a great understanding of what else can increase performance the most besides the groupset.

Budget is $600 each for the wheelset and tires. ~$300 for other smaller parts depending on suggestions.

I'm not looking to pour loads of money into these bikes so no groupset upgrades or major overhauls. But I want them both to perform better for their purposes. Pretty much just looking for upgrades from what I have right now with emphasis on weight, performance, longevity.

1993 Giant Allegre, for mostly flat leisure rides

• Campagnolo Omicron rims
• Gatorskin 700x23c
• Suntour SL full groupset

By just shaving some weight off of this bike, I could probably keep up with most entry-level road bikes in my riding group. Everything else is in great working order, so I'm thinking wheels/tires would make the most difference here? Maybe lighter bars?

1990s Giant Perigee, for good weather commuting (no rain, no winter)

• Araya rims, maybe ?SP-30 since that's the original part per KnowYourBike
• Vittoria Rubino Pro 700x23c
• Exage 300EX groupset
• Exage Motion brakes

These Exage Motion brakes need to go. They're stiff and the tightness needs to be adjusted all the time. What's compatible with this old Exage stuff? Wheels/tires, looking to keep them at 23mm, just want something lighter but still sturdy.

Any suggestions appreciated! Also if there's something obvious that I could be upgrading/changing but didn't think of, please also let me know.

P.S. Bonus points if anyone can tell me the year of my Perigee. Serial number GM201365