I have used (and owned) a fair number of Jet and PowerMatic tools and have found the PowerMatic to have better build quality. I have not looked recently but I would think that the PowerMatics have better specs that the Jet, if only because they are owned by the same company.
If you are considering the PM2000 take a look at the SawStop PCS or ICS. They are well-built top quality saws with the ability to save your fingers. I have had the PCS since it was first introduced many years ago (5 or 6 or maybe longer). Prior to that I owned a US made Delta Unisaw that I sold after getting a chance to test the PCS for Saw Stop prior to it's release.
Last week I had my first "finger save" (as SawStop calls it). I've been a table saw user for 25+ years and prior to last weeks save my only incident was a kick back that hit me in the wrist leaving a nasty cut and bruise. At the time I had a crappy, underpowered $300 table saw with a short fence and questionable build quality. I bought the Unisaw right after that happened and kept it until I bought the SawStop PCS.
There has been a lot of bad mouthing of SawStop's for their push to license their device to other tablesaw manufacturer's. The bottom line is that all tablesaws are dangerous and are probably the least expensive tool that is capable of the most damage. A shaper is right up there with it, but they are not readily available in the home stores for $99 and up and most homeowner's don't have a need for one. I am sure similar tactics have been used by other inventors of safety devices that have found there way into everyday items. I have read that other manufacturers are against implementing it, saying it is unnecessary, too costly, unproven, cost to replace, suffer from false trips (never happened to me), etc. They also say that blade guards are as effective. I agree to a point, but how many people actually use them. I see more saws without them than with and for those who use them SawStop provides one with their saws and offers another one with a dust collection port.
There also is a fair amount of misinformation on what happens when the safety device deploys:
-Blade is destroyed (not true, in my case, but blade needs to checked out by a sharpener)
-Replacement cartridge has be purchased (not true, if it is a finger save you get a free replacement)
-False tripping (never happened to me, and if you are sawing wood with a high moisture content you can bypass the safety device).
In the end even if you were to lose the blade and cartridge and had to pay for it so what. The cartridge is $70 and typical blade ranges from $60 to $150. The blade I was using was $130, so worse case I would be out $200, which is the cost of an ER visit for me. Adding in surgery to reattach (or amputate), the possibility of being permanently maimed, inability to work, etc. makes the decision easy.
If you have ever been in shop with older stationary machines you would notice that a lot of them have fully exposed innards (belts and pulleys) that could make a mess of a hand or finger. At some point it was decided to cover them up and I am guessing that a lot of people complained about because servicing them would be harder.
Bosch looks promising and will be at a significantly lower price point, but it is in no way as well built as any of the SawStop saws (except maybe their newly released job site saw). If I needed a job site saw I would buy the Bosch or the SawStop. Hopefully Bosch will license their solution or SawStop will be pressed to license theirs so that the price differential will come down and others can benefit from the additional safety measure.