Hoover or for more Hi Tec try Dyson
I normally buy overhauled mechanical avionics from Castleberry Instruments, Texas, USA.
Adams aviation are good for new units, be careful as some of the discount places are selling non- certified units.
I do have a number of units that may be suitable for overhaul if you want to go that way.
Good anyone give me some suggestions of retailers that they used and would be recommend to others.
Its for G registered Cessna 150