The one I like is from Bosch, which keeps going out of stock on amazon since it seems everyone is stuck at home and going DIY crazy these days.. It's this one: https://www.amazon.com/gp/product/B0000TZZVA/
You can get it at Home Depot or Lowes too.
I mostly use the "clean" cut blades with a higher tooth count. It goes a bit slower but I don't mind as the cuts turn out very smooth looking. If I had a sander I might use the other wood blades more often and clean up any roughness afterwards.
One more fun fact: with a jigsaw you can buy a massage attachment set for about $20 on amazon, and use it on your spouse. A few uses of that and who knows, you might get approval to buy a lot more tools. :)
I've been using the borscht blades https://smile.amazon.com/Bosch-T5002-10-Piece-Assorted-T-Shank/dp/B0000TZZVA/ref=sr_1_2?ie=UTF8&qid=1515453930&sr=8-2&keywords=bosch+jig+saw+blades&sa-no-redirect=1
I use the "Clean for wood" for straight cuts and the precision for curves (It also helps to drill a hole near direction changes so there's some relief). If I'm trying to go straight I just clamp up two pieces of 1x4 on either side of the shoe and use my triangle square to get them squared up. Although anymore I just use my circular saw or my table saw for straight cuts... Much better tool for that. With the circular saw, same deal to set up a guide.
I haven't really used the "Speed for wood" blade, but I guess I'd use it if I didn't really care how straight the cut was.
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