Honkey, here is some more input.
The standard wine bucket for equipment kits is 7.8 gal. I did my first 4 (and only 4) wines last spring and summer. I plan to do more, I just need to pick some, get space finish the things around the house that SWMBO requires. Although she is more a wine drinker than I so....
Anyhow I don't remeber how much crud came up the side, just that the primary is 7.8. so take that for what it is worth. On the one hand you have a lot more sugar (a basic wine starts at like 1.080-1.090) but hardly any protien for the yeast to get a good keursan going. (this is all to say, maybe a 6.5, but I don't know - use a blow off tube.)
Almost all the kits are for making 6 gallons of wine, the exception to this that I've seen is desert wines, in particular, Icewines. The Icewine kit's (and similar sweet desert wine kits) usually only make 3 gallon, which makes their $/bottle upwards of $5 or $6 /750ml, however the basic ice wine locally is $30/750 -actually $20/500ml, but keeping the units the same
Since the Ice Wine is only 3 gallons, it could be primaried in a 6.5 gallon bucket, but to do the Secondary - Which for wine really is needed to clearify it - you need to have the same volume as your must/wine. So a 6 gallon kit needs a 6 gallon Carboy/better bottle and a 3 gallon kit needs a 3 gallon secondary. The oxygen in the head space is rumored to beable to create bad flavors - including a vinigar flavor. Not good for wine, but maybe you want to have more salads?
[I like salad, but I'm not aiming to make dressing in my carboys
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Wine maker magazine has online articles about wine kits, pros, cons and differences. (
www.winemakermag.com) The basic difference between the 50 and 100 kit for say a Zinfindel is one is 2 gallons of juice and concentrates and the otheris 4 gallons of juice and concentrates. The less/more ispretty much as MalFet describe's it. Almost all of the juice kits are concentrated to some extent as when you get a certian sugar percent, it inhibits bacteria growth by drying out the bacteria.
As to kit makers, I can't recomend any, I've done some Island Mist fruit wines (Green Apple Resling, Pomogranate Zin and Acai Blackberry Cabernet). These are all 'inexpensive kits.' We like the sweet or semi sweet wines. The wines tasted like their names. Advantage of these is that they can be drunk as soon as you bottle, need to age.
Some of what style you choose should be based on what you like. No point making a dry white table wine if you like reds
If you are feeling really experimental, you can make your own. I made 1 gallon of peach wine (not so good) and 1 gallon of cranberry wine - pleasently tart and semi sweet once stablized and back sweeted.