Hello All I would benefit from some opinions/advice on selection of an OT for another amp I will eventually build with a pretty straight forward 6V6 push-pull power section. I want to purchase the transformers now because I want to get a choke to play with a modification that I am doing with one of my old kit amps and I figure consolidating the orders may save on a little shipping cost. Some options I see are: Hammond 1760H 20W 6.6k (4, 8, 16 ohm) Hammond 1760F 15W 7k (4, 8, 16 ohm) Hammond 1750PA 18W 8.4k (4, 8, 16 ohm) Classic Tone 40-18045 15W 8.5k (4, 8 ohm) Classic Tone 40-18090 20W 8k (4, 8, 16 ohm) Classic Tone 40-18038 20W 6.6k (4, 8 ohm) I expect to use the Hammond 270EX PT, so my preference is to use a Hammond OT to purchase from the same distributor. The amp will have a decent amount of preamp gain/distortion I would most likely pair it with a Vintage 30 or a Warehouse 25W Green Beret, because I already have them. Difference would probably be subtle as I am not likely to get the amp up to full power often, but I would be interested in opinions/advice... Go with lower impedance or stay on the higher side toward 8k? Go for a lower wattage to get a little compression at higher output? What do you think?