I'd like to find a really nice German treadle. That Kayser I found in Colorado is still for sale but she won't budge from her 500 price tag.
A Wheeler Wilson 8 treadle. I missed out on the one recently on Ebay. I made an offer for it but someone else made a higher offer by 10 bucks.
If funds were unlimited I'd like to have an Elias Howe machine, or pretty much anything from Civil War era.
I'd also like to have a Willcox & Gibbs, and a table/treadle for my industrial Singer head.
My Singer 24 treadle is coming home today, and I pick up my 29 after the first, which crossed 2 off my list