A good little kit is the LT
It is horses for courses really, the lower the resi the more steam you got I think the way it works unless you have a higher resi and pump in more voltie goodness but that of course will drain your battery quicker too.
I'm running a U wick on my Steam Turbine at 1.4ohm and its sweet spot is about 3.8-3.9 volts on my Kmax, lots o' steam and huge flavour and hit, I would run my 1.8ohm RG500 on the device about 3.9-4.1v and again lots of cloud but less flavour mainly because of the design difference between a BCC and a Genesis type. Juice is also a factor and juice can behave in one atty so differently to another due to its setup of PG/VG ratios, I found a mostly PG ratio works better in my BCC's and my VG heavy juices are nicer in the rebuildables but I imagine the next man along has a totally different experience to mine due to differences in tastes etc
