If you are not going to feed an army there is nothing better than a CharGriller Akorn Kamado. Pretty much the same capacity as a BGE, but made of metal and insulated so it only weighs about 100 lb. I was skeptical until I got one, mainly based on positive reviews, and immediately after trying it I was sold. I love it so much I gave away a $500 gas grill and now it is all I use for smoking, grilling, etc.
You can typically find it at WalMart, Lowe's, or Amazon and should pay around $300 or less. When they go on special at WalMart in the fall they can be as little as $150. Get one disassembled and put it together yourself. One tip, never move it without the lid locked in place.http://www.lowes.com/pd_131712-49769-6719_0
You will need to do two mods and both are for smoking or pizza, not needed for grilling and you can get both items at Home Depot. You need a Weber grate and a Pizza stone. The grate is for a 22” weber and is model number 7441, it will be about $11. The grate measures about 16.5”. Looks like Amazon has it for $11.http://www.amazon.com/Weber-7441-Replacement-Charcoal-Grates/dp/B000WEKNMY
The pizza stone is one which goes on top of the grate as a heat deflector when you smoke. I covered mine in foil and change the foil when it gets greasy. I think it was about $15.
Of course you need a dual temp thermometer, one for the meat and one for the smoker temp. This is the one I use.http://www.amazon.com/gp/product/B00ANCQELE/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
I also suggest a cover unless you can roll it (with the lid closed) into a covered area. Typically you can find the one made for it for about $30.
I recently started using the Tip Top Temp and I'm still figuring it out. I've not yet used it on a long smoke, but others have. I bough some silicone straps to hold it to the top vent.http://tiptoptemp.com/
I love the Akorn so much if it died today I would go out and immediately purchase another.