Manual or automatic airbags for your truck?

Looking at getting some airbags for my 07.5 Chevy Duramax and wondering if I should get the manual fill or the system with guages and a compressor? Also I saw they now have a remote control or wireless fill system but it's $$$$. Hoping to hear some opinions from those of you that use the systems and what you like it don't like about it. Firestone or airlift? Does it really matter. Is one better than the other? We probably use our trailer about 10 trips a year. With the manual system how would you know if you've lost 10-20lbs without a gauge to look at and without getting out and checking with a tire gauge every once in awhile?

Also where is the best place to buy from? And is there a specific model number that is the standard that everyone seems to be satisfied with. Thanks.