- Loading - Here's where plastic has it all over stainless for the newbie. The reels supplied with Paterson and similar tanks are really easy to load provided that they are kept clean and are bone dry. Any trace of moisture will gum up the works and they will jam. SS reels are not self loading and require a bit of finesse. It takes some practice, but it's not hard to do. They can be loaded when wet.
IMHO, this paints a picture that's too negative toward SS reels/too positive toward plastic reels. In my experience, plastic reels occasionally jam and refuse to load. This has happened to me even with reels that have been air dried for days. I suspect, but am not positive, that moisture in the air causes problems on humid days. Of course, when this happens it gets frustrating very quickly, so it really becomes a nightmare. I started with plastic and switched to SS for this reason, and I don't regret the decision. I didn't find it difficult to learn to load SS reels, although maybe I'm just freakish this way or my previous experience with plastic reels eased the learning curve.
- Agitation - Plastic tanks usually come supplied with a "twirling stick" so you don't need to invert it for agitation. No spills and no leaky tops. SS tanks must be inverted for agitation. I can get messy if you're not careful.
OTOH, if you prefer inversion agitation even with plastic tanks, they have a reputation for leaking more than SS tanks do. Of course, there's a lot of variability even within those two categories.
- Fill and Drain Time - Plastic is faster. End of discussion.
Not quite. My own experience is that the difference between a plastic AP tank and a couple of generic SS tanks is pretty small. Although the AP tank is slightly faster, it's not by enough to be important. I've got an admittedly exotic (in the USA) Russian tank that's slower to fill and drain than my SS tanks. It's true that few readers of this forum will rush out and buy a Russian tank, but it
is a plastic tank, and so requires modification of your very strong claim.
- Cost - Plastic is cheaper, a lot cheaper. A good, no-brand plastic tank with two reels sells for less than $20US new. A SS tank sized for two reels is not very expensive, but they come without reels. You can buy cheap SS reels, but they're not worth the carboard box they came in. Hewes brand reels are the best I've seen and a single 35mm reel will sell for upwards of $20 each new. There are others even more expensive that I've not tried.
Plastic tanks and reels
are less expensive than SS tanks and reels, but not by quite as much as you claim. Looking at prices at
Freestyle, an
Arista Premium 2-roll plastic tank with reels costs $18.99 and a
Jobo 2-roll plastic tank with reels costs $26.99; vs. an
Arista SS tank for $14.99 and
Hewes 35mm reels for $16.99 ($3 less than the price you claim for 35mm Hewes reels); or
a tank with two Hewes reels (and 25 negative storage pages) for $49.99. That makes the total cost of plastic $18.99 to $26.99 and the total cost of SS $49.99. (
An SS kit using the cheaper generic reels would cost $23.99, but I agree this would be a false economy.)