A little over a month ago I picked up a replacement for the backpack:
I'm still in the "budget accessories" category, probably for a while longer, so when I wanted to get some better cargo options I started at the bottom.
These aren't Wald racks or Ortilieb bags or anything, so I wasn't expecting perfection. However, these are surprisingly good, from what I can discern so far.
Rack - Ventura Universal
Design and function: The rack is Pletscher style, so it has one of those rat traps. Pretty generally the bag's on when I'm going anywhere, so I haven't had much use for it. It holds a quart jug of milk pretty easily, though, and is a secure place to stash bike locks. It has also held my wallet perfectly fine on a few occasions.
This rack is made of sold steel bars, so it's relatively heavy. The welds all look good, but I haven't wailed on it with a hammer or carried more than 40 pounds on it. There are mixed reviews on the included hardware, but so far so good. I carried an old steel bike bungied to one and everything seems to have gone well.
There doesn't seem to be a way to use panniers, as it lacks those side U/D shaped things to secure them. That may be inaccurate, however.
Installation: The rack comes with almost all the hardware required - M5 bolts (IIRC the same size as a standard bottle cage one) and nylon nuts. You will need to supply the hardware that mounts the arms to the seat post. It takes a M5 bolt, and on my Trailway ended up doing alright with a 30mm length bolt and a nylon nut.
The instructions are useless - use some example pics if you need to off Amazon. I think the first one took about 30 minutes while I figured everything out. The second one I installed (for the fiance) took about 10.
What's nice is that there's several considerations for mounting style. Mine uses a central mount near the seat tube, but it'll work with dual-side mounts as well. 28" and 26" wheels are a possibility.
Fit and finish: The paint's poor quality and is getting rubbed off, and the rat trap has some light rusting on the springs.
My main concern is the bolts that attach into the chainstay area. These can't be very long, so they only thread directly into the stay. Not sure how well that sort of attachment will do without something like a nut securing it further.
With all the hardware in place there isn't really any play to comment on. It's pretty solid. The fiance and I are considering having one of us (her) sit on the rack bodaboda style to test it out at low speed. That is, however, over the weight limit it is weighted for.
Conclusion: For $13 it's a solid enough rack. For about $2 you can get new bolts to secure the arms to your frame and you should be good to go.
Trunk Bag - Roswheel Multifunction
Design and function: It's a basic trunk bag with a large main chamber (6" deep, 6" wide, 11" long), a large left hand side chamber and a pair of smaller right hand side chambers. It uses two wide velcro straps under the rack and two thinner ones to attach to the bar nearest the seat to stay on. The right front chamber is smallest, but works well for a wallet and makes fishing for my base ID easier. The one behind it is larger, and is a good place to stuff my cargo net. The large left hand chamber works for bungies and tools, but it's easy to overload it a bit and make the left side "sag". The main chamber comfortably holds a gallon jug without any struggle. The fabric does well against water, especially the main chamber where no zippers are exposed. The fabric also has some mild insulation qualities. The bag features a detachable shoulder strap, but I have only used it has a backup bungee for my rack. The cup holder is nice, but it has issues with larger tapered disposable foam coffee cups - I use it to attach an extra light, mostly. There's a reflective strip on this cup holder, and it functions - but it's just a reflector, and it's grey. There is a handle on top that runs in line with the shoulder strap.
Installation: You just velcro the thing on. The velcro's pretty tough stuff, and has held the bag on through all kinds of jolts, even when loaded.
Fit and finish: For $15 this is actually a pretty good bag. I've owned $30 lunch pails that weren't this good. It's carried about 12 pounds within without issue. I have had some issue with sagging if the left side is tool-loaded within the side pocket, but no slippage has taken place. If I could make one change, I would reverse the direction of one of the large velcro straps. Currently they face the same way, and I think even greater security could be achieved by having them go opposite each other.
Conclusion: It's $15, but is functional none the less. I don't know who "Roswheel" is, though. I am happy with the size, price and quality.