I have a pile of quality hard cases that are hidden away and only get pulled out when I sell a bass or have a rare travel gig that involves flying. I have a few Fender hard cases that are functional but bulky and fairly heavy. My 2 Fodera Custom cases are likely as high end a case one can buy but they are insanely heavy. Cases are great but I take two basses to all gigs and most rehersals... I am not into carrying two heavy hard cases along with cabs, amp, etc. Too heavy, adds another trip from the car and they are a pain in the a$$ to store at gigs. I can throw my gig bag behind (or lean against) my amp and not worry about it falling over and breaking something. For gig bags... I have a double FBass bag that is beautiful and brand new but bulky and heavy. It is very well built, has good storage space and nearly indestructible. These are only $180 new which is crazy cheap for a quality bag that holds two basses. Likely rugged enough to check as baggage with an airline. Only had this one for a few months. My double Levy's bag is lighter, not as big as the FBass bag, a bit flimsy and doesn't have a ton of storage. These are around $300 new. I have used this heavily for the last 5 years on hundreds of gigs and it has held up well. My wife recently bought me a Mono M80 single bag which I just love. It is insanely light, has lots of storage space and isn't bulky at all compared to most other brands. Very cool looking as well and the optional Tick storage bag is a neat option. Best bag I own, but over $200 new isn't cheap. Was an early Christmas gift and has only been out of the house once. Keeper for sure. I am considering a double Mono ($300 new) to replace the F bass and Levy's bags due to weight and storage space. I also have a Protec Contego bag coming with my January ETA Valenti Jazz 5er build. These are also great bags and inexpensive at just over $100 new. I owned one with my Rob Allen bass and they are almost in the same league as Mono, but at almost 1/2 the price. In any case, I only bring gig bags to gigs/rehearsals. Almost always a double bag. What about you?