depending on HOW they vacuum, the professional grade one cabelas's is selling (the 1100 dollar one) doesnt suck at all. it inflats the bag, creates a vacuum outside the bag, and then forces the air out, wamo ALL the air in the bag is gone....perfect every time! We used these guiding fish charters on the ocean (a slightly larger model). But they are not cheap, ie 2 to 3k for an average one! The one we had was just under 2k, very nice but I dont think it's made anymore. worked great every summer I guided and we did tons of fish literally! Normally it'd only do 2 bags, you could stack 2 on top and get 4 per shot.
The big thing about the higher end models is they'll last you a LONG time with no commercial use..get a few guys on one, and you'll be happy you did. The lower end pro models dont nessicarly do more then one bag, sometimes you can stack them though. The life is worth it...bags are CHEAP compared to food saver bags (not 100% on the cg15 bags yet). And they vacuum MUCh better! I'm really looking forward to checking the cg15 out when I'm back home next week!!! I'll try to remember to post back about it. I cant afford to buy it yet, but all the feed back I've been given it's my next vacuum sealer WHEN my current one dies!
If you're occasionaly going to use it, the foodsaver models are fine...if you're going to buy a higher end foodsaver I'd save the money and buy the cg15. It's a common story from people up here about the fS's longevity...but then many dont vacuum pack as much as we do either. Last time mine died we were doing 45 sockeye salmon and had two sealers going. Like I said I HAVE done moose with a foodsaver and they worked well...but it always seems ONE is failing at the most inopportune time.
right now I have the gamesaver...it does OK. It did hiccup on me when I was doing my last batch of reds on a trip to anchorage this year...came home with 18 on that trip (sealing 6 at a time per day and freezing that nite). Dunno why or what happened. It's working ok now..have done some chicken and some burger I picked up on sale the other day with no problems. It does hold the roll and does have the cutter. and if it wouldnt die it would be a great vacuum sealer!!!
So figure out how often you plan on using it....that'd be the ultimate deciding factor in my book!