Can anyone give me some advice for a good length and width for an underquilt that will work well with my hammock? I have a Jarbidge synthetic underquilt and I like it but I like to go with something in a high quality down. The Jarbidge is 58 inches long and probably long enough. Most full length underquilts I've found are 78 inches long and thats maybe a little too long.

Anyhow if you have a TX-250 what down underquilt works well for you?