Great bear is easily the worst I've been on...although Ninja at SFMM? ending with a lift is never fun.
for best I would say that I love the ending of boulder dash at Lake Compounce, or SROS (Bizarro) SFNE because it is powerful and continues the intensity of the ride
The Dragons are definitely my favorite of the ones I have been on, but I also love Montu and Alpengeist was good too...I actually think I have loved all the B&M inverts I've been on other than Great Bear...
LOD does need some love and care, but I think after Jungala was built it would be in BGT's best interest not to re-vamp a current kiddie section but add more rides elsewhere...perhaps not a large coaster, but a small coaster or a pair of decent flats...just my opinion though.