Hello, Recent firearm owner of less than 1 year here. Got my first mossberg 500 for home defense, now I'm looking for something to plink around with. Went to a LGS and handled the M&P 15 sport ii, ruger 556, Springfield and another that I cannot recall. Aside from aesthetics, I really can't tell the difference. The staff recommended the M&P 15, and many of the reviews and videos also suggest the M&P. With the firearm situation, shortage etc. is this a good time to buy? The LGS is selling at $720, I've scrounged through the classified ads here as well as carolinafirearms, nothing available (also let me know if you have one you're thinking of letting go). Not in a big hurry but also don't want to regret and see the prices go up. What are your thoughts?