Unless the baskets are so poor that it's hard/noticeably harder to make putts, I don't really care what the baskets are. Pretty much any baskets, including portable consumer grade practice baskets, are going to satisfy that.
However, there are two big issues where homemade, practice and even older baskets are going to lag.
The first is condition. A basket that's visibly old, especially one that is rusted, is just overall less satisfying. As with most things in disc golf, aesthetics matter.
The second is basket visibility. This somewhat goes hand in hand with condition, but the bright, powder coated bands at the top of new baskets are simply going to make playing a course for the first time more enjoyable. At least for any course where it's not dead obvious where the basket is on a given hole. An old Mach II can be hard to spot even at 125 feet if there is just a little bit of shade and tree cover. On a 450 foot par 4 with a dogleg? That scouting job starts to get much tougher.