Definitely a DGA Mach Lite. It folds up to the size of most fold up chairs, is super easy to put up and take down, and it catches almost exactly the same as a Mach 3 or 5. It's also built to be almost the exact size and shape of a Mach 3 or 5, so if that's what you have at the course, you're getting good practice.
The DB-5 is solid, thicker, and a little heavier than the Sport. Adding inner chains to the DB-5 was also easier and better placed than the Sport model.
The Sport is not as ugly as the DB-5 and has a smoother finish. It seems to have a little bit more stability than the DB-5. Adding innner chains is not too hard, but you'll have to modify it somewhat to have the inner chains lined up where you want them.
So far they both catch very well, but I need to throw more and break them to find out which is better.
I have the DGA Mach Lite, and this basket can be taken down and set up in less that a minute! It holds just about every toss you put in the chains. Has a nice bag that slides over it once folded up and you're ready to go. It is a great basket and you can get it for under $150. I definitely recommend it!
I own an Innova Discatcher fold up basket. I paid $115 for it at a local shop. I love this thing; it folds up or out in less than 10 seconds. I've carried it on my back to all kinds of great places; hardly realize its there. It almost catches too good, grabbing some putts that maybe would not have stuck.
I love it and plan on buying one of each of the other two colors available.
It doesn't really matter. Buy the cheapest thing you can find or putt at a post or small tree.
Even the best permanent baskets don't catch well (except Spiderwebs). For putting practice all you want is a target. If you can train yourself to hit a small target that skill will translate well to any type basket you encounter.