Originally Posted by gooki
I hate jigsaws and avoid them like the plauge. Get a circle cutter attachment for your drill, or a router with a circle cutting guide.
In your budget I'd recommend the circular saw and circle cutter. And save up for a router, they're very handy.
PS this is what i mean by a circle cutter attachment for your drill:
I really like my jigsaw for all kinds of things, and have cut many a woofer or other cabinet hole with them. That said, I do prefer the circle cutter as pictured above. However, I feel obligated to note that the style pictured above should only
be used on a drill press, never on a hand-held drill. They work excellently in a drill press. In fact, I just used mine this week to cut ten beautiful circles. If you want to use it with a hand-held drill however, you will need a style of circle cutter that comes with a stabilizing base (which also acts as a shield). There are many available, but they are considerably more expensive than the other type. Here's just one, they can go up to over $100 though:http://harborfreight.com/cpi/cta...emnumber=98001
I am using the $5.99 cutter from Harbor Freight, which looks more or less identical to the one above. It gets the job done, but protests a lot and just is not very smooth in operation, nor all that easy to adjust. I think I'll look for a much higher quality one - you get what you pay for. I have found that oddly, the single blade ones seem to work better. Anyhow...
A router is a great tool, though I would say for speaker building, I have only used them for decorative edges or for recessed holes. My Ryobi plunge router is still going strong after about 11 years. I had it fixed for $50 (half what I paid for it) about seven years ago when the shaft lock broke, because it just felt better in my hands than anything else. The Ryobi corded drill I had, on the other hand, wasn't that good at all. The motor burned up after only a couple years.
If you're looking for a tool to 'cut the sheets of wood', you would seem to be looking for a table saw. Now, I've gotten by without one because I have Lowe's/Home Depot cut sheets to the size I needed - or at least small enough to fit in my car. They don't even charge for that service anymore. However, I also have a sliding compound miter saw, which will crosscut up to 12" wide boards, and I have a Skilsaw (circular saw) to cut larger sheets. The only things which can really compare to a table saw when cutting sheet goods is a panel saw ($$$$ - like what they use at Lowes/HD), or a Radial Arm Saw.
All that said, if you don't have much space and cost is a concern, you can get a fine circular saw for not much money, which can give very accurate cuts with a little bit of preparation.