If you can post the pictures here after you get them, I'm sure people can give you enough good info to make a decision.
One thing to look out for is the type of needle required. I would love to have the high arm on a W&W No. 9, but the needles aren't standard and the right ones are hard to find at good prices. There are packages of three on eBay for $10 plus postage - who wants to pay $4-5 per needle?