At this price level, you can’t beat this set. Here are some details:

Pros:
Nice to have the extra tom and cymbal, which you normally won’t get with an entry set
Great responsiveness from most of the triggers (except the hi-hat — see below)
Fairly easy to set up or rearrange the way you like
Pretty easy user interface on the sound module — just read the directions first

Cons:
Hi-hat responsiveness is kind of lame. And there is no way to control, say, completely closed, half open, and completely open. It tries to interpret the sound you want, but it changes pitch as you move your foot slowly up on the pedal. Weird.
Choke function on cymbals requires you to grab them in just the right place. Otherwise, it doesn’t work.
No differentiation between the ride and the bell of the ride cymbal — same sound no matter where you strike that trigger

Overall, I give it four stars because, despite some flaws, it’s really worth the price.

I like to play the drums as a hobby from time to time (can’t put real drums because of the loud noise) so I bought this DM7X in Costco back in Sep 2013.
Less than a month after I bought it the Stealth Kick Pedal sensor stopped working. I had to ship it to Alesis to replace (they insist I send them all three parts of the Kick pedal).
A couple of weeks later one of the Cymbals stopped working as well. Again, I had to ship it to Alesis for replacement and shipping cost is not cheap… Alesis then ordered the parts from the manufacturer so it took me about 1.5 month to get a new Cymbal and 2.5 months (!!) to get all three parts of the Kick pedal (they shipped it one after the other as they received them).

Bottom line, I think this is a classic case where you get what you pay for… low quality system that is sold for a low price. If you’re serious about drumming, I would strongly recommend investing more money in buying better quality system from a better brand than Alesis.

Before I start, I would just like to say that alot of people under-estimate Alesis, so half of the reviews you see are mostly just over exaggerated and pretty bias at times.

Anyways, let me just review the 3 key elements of any E kit.

-Quality-

The nice, rigid build of the legs and the great pads got me falling in love with the kit right when I assembled it. The sticks that come with the kit are powdered, though, So don’t use them until you clean them off. The whole assembly looks very nice from afar and up close, and I feel euphoric when I play Jungle and Breakbeats on these pads, as they are very well textured and offer a nice bounce for the sticks. The kick is a small little button-like pad thing, It stays out of my way and feels better than a regular kick drum pad.

-Features-

The module offers many features to make the kit just, well, work. There are many practice tools in the module to keep your drumming skills 100%. The pads are all dual-zone, so have fun hitting rimshots with all your might. The cymbals all have choke, but the crashes are the only ones that choke (which is fine anyways, not many people choke a ride unless they finish playing, and who the hell chokes a hi-hat?)

-Sounds-

The sounds are crap, they are the the only reason why I gave this kit four stars, and also why I say it is the best Alesis kit for MIDI, because the sounds are just so… bad. I use this kit for Superior Drummer and FL Studio drumming, and let me tell you, I would of returned this kit if I didnt have those two programs. Seriously though, many of the drum hits sound very synthesized and cheap, I feel kind of bad for the module, the little dude isn’t being used for anything else but MIDI. If only you could load your own samples…

There you have it, a review that doesn’t completely bash on this kit, or anything Alesis makes. If you are a beginner, get this great kit, it will be worth your every penny. If you are a professional studio drummer, the extra crash and tom are very confinient for all types of drumming, but PLEASE don’t use the module’s samples for a song, just use the MIDI functions to connect this kit to your DAW or MIDI sampler software or whatever you guys use.

…Oh god, I finally decided to make a review on Amazon. I feel very guilty for some reason…