I use the radica stick modded by Jay for me. Back in the day with my original 7800 I sent about 3 pairs of the proline sticks back to Atari as they were still under the 90 day warranty so I don't have much use for them now.
The Radica is pretty cool unless people with small hands (kids) are trying to use it, then it can be a bit cumbersome. I need to get some 2600 sticks somewhere for 2600 games as they were always pretty comfortable. Actually the Wicos are my favorite of all time. They were probably the most durable sticks I've ever played with.