Feature:
I prefer 1/4" jacks as opposed to those overpriced Speakon connectors. Speakon's are great but for working musicians make your cables way too expensive.

Quality:
Very solid, light weight (20lbs). They arent Bagend but the will hold up will a little care.

Value:
They don't take tons of power but because they are very eficient complared to most 10" PA speakers, SPL is high. For example: The Yamaha 10's are 95db and these are 98db- you need half the power for the same spl. Th Behringer B212's are only 93db( you need 4 times the power for those) Plus I can buy 4 put them on stands and get way better coverage and louder than just two regular speakers and for a smalller price and weight. I don't think there is a better value

Desirability:
I wanted it and I bought it. I now have 4 that i put on stands. The combined weight is 80lbs and they replace Some Yamaha 115iv (15, horn) which weigh 61 each(122 lbs total). Saving 42 lbs. I get better coverage, just as much bass, same spl and using less power. So yeah these are great for the money

Sound:
For the price - it kicks but. The sound is pretty a balanced and has great bass, for a 10" speaker. I actually use it with stewart PA100 bridged (180watts) for my guitar rig with a Pod xt. I occasionally use it for bass because it is very efficient, quit loud and has excellent bass again for a 10". Tweeter can be alittle harsh when pushed to the limit but not really that bad. These are great for Modeling guitar/bass, acoustic guitar and vocals

Ease of Use:
Plug them in to your amp and they work great.

Support:
never needed it

Overall:
So yeah these are great for the money. You wont find a better 10" PA speaker for this low of a price and they are very light. You guitarists, get a Crate Power block or a Stewart PA100/PA200 and your favorite modeling pedal and one or two for stereo of these S1020's and move into the 21's century. For bass they work great with modeling for a situation where you could use a single 10 speaker. PA - very loud and light weight, excellent bass, awsome coverage