Finally finished up Industry V and was able to get into my Mining Barge. Everything about it is so much nicer than my old Mining Frigate. I upgrading from straight mining lasers to Strip Miners, my ore hold is 4.6x as large (23k), and I can fit 5 drones (up from 2) and 3 Mining Upgrades (up from 1).
So how does it compare? Well, right now I can not use the Modulated Strip Miner II, so I am about 20% slower than 'optimum', and I am only using Mining Upgrade I, which is 5% increased yield instead of 9% each.
But I am hauling in 1294 m^3 / cycle (where a cycle is 3 minutes) per Strip Miner. So I am getting 216% of what my Mining Frigate was getting. Add in a few more drones, and I am tearing through asteroid belts.
I am filling my ore hold + cargo hold in ~35 minutes (of afk'ings... so if I was paying attention, I could probably get that down closer to 32-33). And I could sell the ore straight up for about 3.5M per run. So 1M / 10 minutes. 6M an hour. Not too shabby for high-sec. My corp and I are currently storing our ore while he trains up Refining. At our station, with perfect refining (and minus the 5% tax), we are looking at increasing profits by about 15% (assuming all scordite). So, in reality, its closer to 1.15M / 10 minutes or just under 7M an hour.
The total cost for all this is coming in at about 30M. I'll recoup my costs in about 5 hours of mining.
There's an ice belt nearby that we are going to check out soon. Not sure if that is a higher profit or not. Low-sec ores are surprisingly not that much of a better sell, from a straight volume:isk ratio.