I-Torch has replaced the Venusian II with the
Venusian III now. It has 700 lumens (claimed, I'd say more like 600ish) and now also has a red light that users have been asking for. Now has a push button switch that changes color with battery level. Comes with a YS mount Comes with two rechargeable batteries, so one can be in the charger read-to-go. Price is $265. Nice budget light that competes well with the UK Pro AquaLite.
The Sola's are a nice design, I dive an 800 myself. But you'll only get two dives off it without charging. It's also sealed, so if you have a problem on a trip you're sort of screwed. The Sola Photo 500 has 500 lumens and only has white light. The MAP on it is $299 btw, and you have to buy a $35 mount as well. Don't confuse the "Dive" Solas, with the "Photo" Solas.
Fix also has some nice new Neo lights, but the smallest is the
Fix Neo 800 at $349, only wiht white light, comes with like 4-5 mounts, a very nice display, light levels adjustable in 1% or 25% increments, both battery level and time-remaining read-outs. Same sort of design as the Sola, but with swappable batteries ($110). For the small difference in cost it's a no-brainer over the Sola 500.