IMO yeah it's worth it as far as autos go the 930 is a solid, reliable, fast gun for a very reasonable price. Then again...a 500 is a staple. I'll flip a coin and say go with the 930 and all its possibilities, but realize at some point you may have to actually clean it. Good call on Mossberg. And on going with a combo (particularly useful 18/28, I had 24 rifle sighted smoothbore/28 vent rib later chopped at 19" once filed flat and level No way to make a clean looking cut thru the rib though, with hand tools). If i wanted just one shotty for sport (the sports of 3 gun and pickup games of clay targets with buddies) and home, would blend the options and go a Remington 1100 Tac 4 (or the FN SLP eqivalent). If I were to own a 28" 930 barrell, it damn sure would have a full length extension (10+1) to clamp on to. Because it exists.
Before i fell in love with the SPX or it was concieved, the 18.5" bead sight HS model really turned me on. First semi auto shotgun to do so. Previously would never have considered an auto for HD (even a Benelli), but research found an unusually robust and reliable model. traditionally had prefer the inherent trustworthiness of a pump and a large frame wheelgun over a 1911 for castle duty, and disregard gas impingement AR's entirely. Of all places, defending yourself in your own home is no time for dealing with a malfunction
Really AFAIK the 930 is Mossberg's first auto series to really catch on. Wish I would have went with a SPX instead of Saiga, and even the butter smoothness and Comforttech of a similarly configured M2 Tactical doesn't begin to justify costing twice as much. The SPX might be the best all around tactical shotty out there all factors considered
For home defense, the plain HS model/configuration is better than the SPX. KISS whenever possible. The SPX is a 100 yard, ammo depending, weapon system. You're better off with a bead for real life, adrenaline pumping/state of shock, indruder in your home, fall back autopilot onto your weakest level of training, kill or be killed, life altering action. And lack of mag extension...whatever. I think all mag tubes ought to go flush with muzzle (at least in 18-20" range, defense and combat oriented variants) not just for using capacity potential which is always 'why not', but they balance nicely muzzle heavy IMO. I would probably not bother to add one to the HS or Combo model so configured. Plenty to do a shotgun's indoor job.
between the the 500 combo or 930 combo, congratulations on a choice you'll be satisfied with and not look back either way. The 930 is a lot of auto for the money though, well worth 180 more than a pump.
Once you use a tang safety, you're a Mossberg guy for life. As a 500 and later 590 owner often thought the 870 superior and is in some ways, but both great guns the best is probably whichever you get used to first. Just like 10/22 vs. Marlin, AR vs. AK. If a large portion of the shooting public own a model, chances are you're going to be alright. Cleaning the 500 can suck re:small parts around the loading port (thankfully no 870 thumbreaker lever) and action bar attachment. Over the course of 10 years, annual at minimum stripdown cleanings...every time was like the first time. Deficiency in mechanical inclination for sure, but a somewhat delicate procedure for anyone it would appear, gravity working against ya. Had a 1300 Mariner too that I hated for punishing recoil and that was with low brass 7.5 (and ugly black parkerizing on reciever of mirror shine chrome everything else gun, not to mention the slide's pushstart unlocking coupled with too pronounced grooves in the forearm leading to pinkie dislocation... all the time), but for whatever it's worth there's a Glock simple pumpgun to take apart to clean after the first akward experience my one compliment to the 1300
Plus if you watch sunday ads, sometime you may be able to get the 500 combo for 100 less than even that, at which point, you should. but if this is not a question of auto or pump, the choice seems so obvious. The only other auto you could probably get for under 5 tag price was made in turkey, this is mossberg and ya get the 2 barrels to cover anything suitable for flying pellet clusters
Just one drunk mossberg fan's opinion. You went with a winner either way
Peace
gnite