Alexis B. of Surrey, BC
Canadian, American, and future Israeli!
I don't have any experience with any of the tables you have mentioned. I will keep my eyes open though and if I spot anything I will be happy to pass the info on to you. Have you tried Craigs List in the Portland area. You can sometimes find really good deals there.
Do you have anyone available that does any type of wood work. The older sturdy desks make great sewing tables and you can get a hole cut to fit your machine and mount a support shelf at the height you need for your sewing machine. Good luck on your hunt.
Alexis I found a fabualous sewing cabinet with double extension tables at a used store ,thrift shop ,for 50.00 have you checked any of those . I just had a man come it and make the opening in the cabinet alittle bigger to fit my machine. but you mihgt look aorund some of these stores.
EAT!! SLEEP !! QUILT!!
Alexis, I have the Gidget II table by Arrow that I use for classes and retreats. It is very sturdy and does not vibrate overly much. It has wheels to help in transporting it. I ordered the custom cut acrylic insert so that my machine would sit flush with the surface. The whole purchase was just over $200 including shipping, and it arrived at my door within a couple of days. I'm very happy with it.
On the banks of the Mississippi River in north central Minnesota (Brainerd lakes area)
Alexis, if you need a big space to support a quilt while quilting it, you can always look for a folding card or "banquet" table to put behind a sewing table when you need it. I started with a very small table with an opening for the machine and put a 4' folding table behind it when needed for quilting. Good luck finding the right set-up for you!
This is what I have and I absolutely love it. The table isn't very large, but I use a 2 x 4' folding table behind it when I need to support a quilt plus a TV type table on the left side (I only do lap sized at home). It is very sturdy and doesn't shake any more than my dining room table used to. http://www.amazon.com/Arrow-Sewing-Cabinet-Gidget-Table/dp/B005U6W1LA/ref=sr_1_10?ie=UTF8&qid=1348220018&sr=8-10&keywords=sewing+table
Do you know anyone who is handy with nails, hammer, etc. Keepsake quilting has a plan for sale for 15 bucks I do not know how much the supplies you will need will cost or if you know of a friend. You could try estate sales you never know what some previous owner had before.
Check your used furniture stores in your area and antique shops - I have seen a lot of sewing tables at these lately - or watch the estate sales - I have found you can pick them up rather inexpensively at those sales.