You are comparing apples to oranges. Computer speakers are not equivalent to home theater speakers and neither are el cheapo speakers.
That Golden Ears sub is an 8" driver and the plate amp is rated at 1000 watts.
No 8" driver I know of can handle 1000 watts. I saw a review where the 1500 watts of the ForceField 5 is a 'midway between average and peak' according to the designer (that is actually the number on the input power plug connector too -- power out cannot exceed power in long term). In that case the ForceField 3 is probably a 750W rms amp and it probably also cannot come anywhere near its rated extension either. The SB1000 extension seems about equal to the tested extension of the Forcefield 5.
If the power spec of the FF3 is a lie probably all the other specs are lies also including that 18Hz extension rating.
http://www.avsforum.com/forum/113-s...ear-forcefield-3-4-thoughts.html#post28182938
GE has gone on record in refusing to send Josh Ricci any subs to review. You can make of that what you will. The one subwoofer they did have measured (the force field 3) by soundvision performed quite poorly under 40hz. It did okay in the upper bass.
http://www.avsforum.com/forum/113-s...eld-5-subwoofer-official-avsforum-review.html
Goldenears appear to be high output super-compact passive radiator designs. They compromise on sound in order to get the size down IMO (I have never heard one though, just going by what I am reading). Depending on your application, small size may be good but you are paying nearly double for the privelege of losing sound quality IMO.
My guess is that the SB1000 will destroy that Golden Ears Force 3 in both raw output and extension. SVS specs are honest and that sealed sub is a 12 inch driver rated for 24-250Hz that probably will do 20 Hz in a very smallish room.
The thing you have to ask yourself is what performance you want. Bothering your neighbors or not is going to be totally in your control. The better the subwoofer, the less chance of boomy response that will annoy people and the more likely you are to be satisfied with lower output levels plus the higher you can go in output before annoying people with the boom.
Also, if you use a home theater receiver with it you can have things like room EQ and dynamic EQ and dynamic range control available to improve the sound further while controlling how much you annoy the neighbors with bass transients.
Audyssey MultEQ/-XT/-XT32 are the three comon flavors of room EQ you want to investigate if affordable subwoofer EQ is desired but Audyssey 2EQ will not EQ the sub and the new Onkyos do not have Audyssey at all.
Other room EQ systems (YPAO from Yamaha, MCACC from Pioneer etc.) have different capabilities and may or may not EQ the sub or speakers depending. Onkyo's AccuEQ is not room EQ and generally not recommended on this forum either.
If you do use a receiver you probably want to investigate better speakers too. SVS Prime satellite speakers with that SB1000 subwoofer will give you great performance for $770 plus you can demo the system at home with no financial risk at all if you take care of it and return it within the time window. BUT you will need to increase your budget to include a receiver and wiring at a minimum.
There are other options available from Infinity and Polk etc. that will save you money but they probably will not match the performance of the SVS for the money.
You can certainly spend much less for a quality system dedicated to computer sound if you want to. Then again if you invest in quality home theater system now you can also add things like streaming audio/video player etc. and be happy with your new home theater plus you will have optional upgrade path to surround sound with matching speakers.
Up to you which path you want to take.