When I build a rod that I keep longer than a year I will chuck REC guides on it. They are more superior than regular fly guides or snake guides.
On a 28” rod it’s not bad, you’re only running 4-5 guides. You start getting into 40”+ you’re running a lot more guides and the prices is tough to swollen. $0.50 a fly guide at basskhang is hard to beat.
One recommendation I have with fly guides is keep your guides on the larger side, if you plan on fishing outside. The larger guides don’t freeze up as quick and a bit easier to get the ice off. I run 5s or 6s as my tip guide.
Lastly. If you have a broken rod, or when you break a rod, strip off the guides, specially if they have REC guides. They are easy to clean up for use on your next build.