Although my rankings may be off a bit (since I can't go out & walk among them) - here goes:
1.
S. flava var atropurpurea "Kimber Red Ruffles" - probably the most striking plant I own. The size & color of the lids just never get old (
example)
2.
S. leucophylla var alba - I don't own any clones that could claim this name but I'm always impressed by pics of really white variants
3.
S. psittacina - a very unique trapping mechanism within Sarracenia - combine w/ a large, bulbous, colorful head - wow
4.
S. flava var atropurpurea - NC locations - another clone I don't own - but pics are always beautiful & elegant
5.
S. purpurea var montana - a clone with good veining is extremely striking - has to draw you in to admire the designs & color
6.
S. 'Adrian Slack' - one of the few hybrids that can possibly improve on the design - very impressive
7.
S. purpurea "Brunswick Beauty" - super dark & very vigorous. In general, the low, water-filled traps of all S. purpurea have proven to be very effective.
Examples of purpurea diversity in one tray
8.
S. minor 'Okee Giant' - love the appearance & design of this species (S. minor in general but large variant is even more impressive) - tightly closed hood keeps out water & makes the windows more effective
9.
S. leucophylla - red variant - combined with normal & alba clones, this variant is beautiful
10.
S. rosea var luteola - large, robust & very striking with it's light green color
Honorable mention:
S. rubra var alabamensis - while S. rubra tends to be somewhat drab most of the year, this subspecies (or now species) really comes alive during the fall with larger, lighter-colored pitchers