I have started installing HM7000 decoders in all my steam locos. Works greatgrinning For my Wishlist I would ask for a mini power bank. 0-6-0 tanks need the stay alive most, however they have the least room. I cannot fit the HM7070 due to its size. The existing stay alive lasts for some time (sound only for about 30secs). My most important need of the stay alive is for 1-2 secs whilst crossing points or bad spot on track. A stay alive 1/3 the size, or extra slim (3mm) to fit inside the tanks of a small loco, would be useful.