Spend the extra $20 and go for Fasttech's Ithaka. There are people that have gotten the Oddy clone from FT up and working, but from what Ive read it is very, very finnicky. If you are really good with RBAs, or like an RBA that needs a lot of tinkering to get working, then by all means get the Oddy.
As far as no resistance wire, I went through the same thing when I bought my Ithaka clone from Silica Wicks. The rationale for using it, is because the positive and negative posts with these kinds of RBAs is so far from the coil. If you think about the amount of resistance wire you would have to use to both build the actual coil and then connect it to the posts, you would get a lot of resistance and a lot of heat and shorts. You will need it to rebuild coils on any Odysseus, Ithaka, Diver, or their clones. It really isn't that big of a deal to connect NR wire to resistance wire. I just watched PBusardo rebuild the GG Odysseus and he shows how to do it. Beyond that, there are also other videos that show how to do it.
There are some vendors that have been selling resistance wire with NR leads, meaning that you don't even have to connect them if you are feeling uneasy about it. I know Stormy's Vapor Cellar sells 'ready wire' like this. Avid Vaper sells coils already made with NR leads, but does not sell the actual wire by itself.
The popular NR wire materials are .999 silver wire or nickel wire. You can pick up the .999 silver wire (that is a similar gauge to your resistance wire) from some craft stores as jewelry beading wire. I just got mine off of ebay.