Bag options for SW?

What are the options for a tunnel bag? I think that's what you call them, to go in the area between your feet. I presume they all interfere with fueling?

I know there's Givi and Shad but are there other top bags / trunks whatever we want to call them that are equally good and worth considering?

I don't want cheap but I wouldn't mind economical. All thoughts and input are appreciated.

givi works----I use strong Velcro to hold it on---makes getting on bike harder, as step thru is gone, have another I picked up in Korea, has served on several scooters, again Velcro sewn on bag/stuck on plastic---this bag works for small dog,too.

Problem on SilverWing "hump" is not very big-----any bag you can fasten on and stuff in space works,too. Sad but on Helix I used BMW expandable tank bag and could really carry a lot. Hump space was larger. All hump bags require bag removal to get at gas flap---thus Velcro for me. I do not like straps.

For carrying stuff, waterproof rubber bag works fine also on passenger seat.

This is the one I use:

http://www.silverwingstuff.com/info.html#