I started playing acoustic guitar recently - and for the record, I am more of a rhythm player / strummer. My first guitar was one of those combo box guitars that come with everything - guitar, amp, picks, strap etc - for a few hundred bucks. After I played on that a while I wanted to get a nicer, more advanced guitar. I ended up purchasing a Taylor 114ce Acoustic Electric.
Anyway, when I first got my guitar home I noticed that while doing some basic strumming of chords with a pick (most notably G and D) my guitar was giving out this echo-y reverb-y sound that was highly noticeable and didn't sound right. Almost as if a small crash symbol was being played as well. I was disappointed with the sound and disappointed with my purchase. I didn't know what to do... Was it the strings? Was this guitar not meant for rhythm guitar style playing?
Then I realized - those picks that came with that combo box guitar (that I was still using for my new guitar) were very plastic-y, very hard. I started wondering if the picks were the culprit. I started doing some research for picks that were good for rhythm guitar / strumming. I found out about the Dunlop Tortex picks so decided to give them a shot. I decided to pull the trigger on some smaller / lighter ones as that seemed to be a recommendation if you are a strummer.
I ended up trying out the .60mm gauge - on the lighter end, but not ultra flimsy... Once I started playing with these IT MADE A WORLD OF DIFFERENCE! I can't stress enough how much more amazing my guitar sounds when I play. Chords are bright, full, crisp - and most importantly - that annoying reverb sound is gone. These picks are durable, light and smooth. All my guitar needed was a more delicate touch. I am extremely happy with my purchase. Come to find out, the Dunlop Tortex .60mm is the same exact pick that Dave Matthews uses - and I can totally see why!
Don't underestimate how much the right pick will have on the sound of your guitar with your playing style!