Yes, they are better suited for my personal goals - military/fighting/being bulletproof through the middle. I like getups with a DB etc, but they are a bit limited by shoulder stability, and technique - or at least I find them to be personally. SB getups, in my opinion, have a far shorter learning curve, and place more of the stress through the legs, hips, obliques/trunk generally, as well as a lot of the back muscles. It is possible to do them with heavier weights, and it effectively simulates the action of getting out and up from underneath a weight/person that is trying to pin you down. I don't foresee a situation where I will need to be able to do this with one arm neatly raised above my head. I can see man circumstances where the brute force of getting out and up would be invaluable.
I would suggest that there is a third option. I visited a military surplus store online, and bought an old canvas army bergen (for example: http://www.surplusandoutdoors.com/shop/camping-equipment/rucksacks-bags/british-army-issue-olive-kit-716112.html). This is more expensive than it was when I bought it, but it is still about price of a couple of drinks on a Friday night. Mine, when filled with gravel, will weigh as much as 172lbs. For c.$15, it is hard to imagine a better piece of equipment. Tactical training bags are for sissies, with all their pretty handles. By a big old sack, fill it up a bit, and start getting rough. I have more than one of these now, as shoveling gravel into them between sets gets old pretty quickly.
I tend to do a single straight set shooting for 20 reps, at the end of my workout prior to conditioning work, and increase the weight when I can hit it. I've been working with 90lbs, and should be going up to 100lbs as of next week. Depending how strong you are on your other lifts, and where your conditioning is at, I would have said 60-80lbs is a good starting weight. Good technique is whatever lets you get out and up with the weight without hurting yourself of face-planting the floor. It's a real man-maker exercise in my opinion.