For openers, I'm a big Tower Hobbies fan. I've been a customer since 1975. I also have purchased from Horizon, Midwest, Hobby King, etc. ,etc. I really like them all. Sig, not so much. Their designs are dated, their marketing more so, and their prices for what you get for your money always seemed high to me compared with others. I always swapped out the hardware that came with their kits in favor of Dubro or Sullivan. Personal preference I guess. Their finished planes always seemed heavier than others. The wood wasn't selected for its purpose in a kit. Again, just in my limited experience of building maybe 6-8 of their offerings, usually for other people. The Kadets are great flying planes. The Hogs are great flying planes. But on balance, to me, that is about it. I did want one of the P-51B ARFs they were offering - built in China no doubt - but they were never in stock. I'll miss them if they go, but nowhere near as much as I would miss the others mentioned.