I don't use them in a production shop and so can't say how they'll hold up in heavy use though.
I changed companies and then removed the bolts, except the ones to my shop.
Nice thing about a well equiped shop is very often you can spend a bunch of cash, and the weekend building something you could have bought for $50. Greg
As my shop is just off the laundry room, it's an easy thing for me to handle. The kids do their own.
Would be good in your shop.
You can get almost 4X the heat at half the price with propane http://www.northerntool.com/shop/tools/product_200485167_200485167
The local small engine shop wanted over 4 bucks for a foot. It's about 2 bucks at Aircraft Spruce
My table saw sits on this, which is basically what you described: http://www.rockler.com/power-tool-mobile-base-hardware As small as my shop is, I couldn't get by without it.
Of course, I didn't have shop back then, so... Anyway, thanks! Happy Holidays to you and yours.
And, between the choices, I'd always go w/ the local shop over either BORG... --