Well I didn't want to speak about what I haven't tried yet, but I will share my ideas on what I've heard.
RYO cigarettes are like brewing your own beer: it is easy to do better than the standard offerings you can buy outright, but you can still easily make something mediocre as well. Many easily found RYO cigarette brands are not much different from the standard cigarette, in terms of taste. They are more pure, cheaper, and stronger, but not necessarily a better taste. My examples of these would be Buglers. They are a strong cig, with a fairly decent taste, but nothing special. They are not smooth, so most would not prefer them compared to a premium premade cigarette.
Zig Zags are very similar to Buglers in the regard they are strong, not smooth, and compare to a normal cigarette; I would say they lean toward a more turkish and/or oriental tobacco taste, though.
TOPs are better; they are smooth, a fairly mild, light taste and strength. I think they are an excellent cigarette to get started out on and it's found in many places.
Bugler Golds are fairly moist from the pouch and have a very rich, almost pipe-tobacco aroma to them. They are very mild, comparable to TOPs, with TOPS being a bit more mild. IMO, these are much better than the 'standard' cigarette. Probably comparable to a more premium cigarette. TRY THESE if you find them anywhere. Seeing as Bugler is owned by Lane Tobacco (the major pipe tobacco producer), it is no surprise the smell is there and the moisture content is high.
Those are what I've tried so far. From what I've heard and read, Drum RYO's are very good for a smooth yet full flavor. I saw them at the local WalMart this evening and totally forgot to pick up a pouch. I will probably stop by in the next few days to purchase a pouch and see what all the fuss is about.
Bali Shag Red is also supposed to be a great mild Danish blend. American Spirits are a good natural blend, and I even heard there is a red Perique version that I would kill to try. And if you're into perique, I've heard S.J. Rimboche perique RYO tobacco is great, you just have to find it. Three Castles from HBI is a very good, mild blend. It is made from an old method of 'washing' the tobacco to get rid of most of the juices, making the smoke extremely mild (and almost bland!).
IMO, RYO tobacco is for do-it-yourselfers. You gotta find what you prefer! Even though I haven't yet smoked the premium premade cigarettes you listed in the first post, I would recommend you try Bali Shag Red, Bugler Gold, and possibly Drum to try out.
Jenaimarr - that's what I do. I'll roll out a pack (20) cigarettes and carry in a case so I don't have to worry about rolling. Also, the little rolling machines are a life saver for a newbie roller. The plastic belt-thing is usually stiff when you first buy them and will roll a way-too-tight cigarette. The trick is to break it in a bit or let it get warm by sitting it in the sun a little while to soften it up. Not too much, though, because too much sun will make the belt separate at the seam. The rolling machines will consistently roll a PERFECTLY round cigarette that easily passes as a premade cigarette unless someone notices the lack of markings and filter. Then again, after a while you get pretty good at rolling them yourself, so who needs a machine?!