If you don't Mind a bit of a wait, depending on Which shipping option you choose, fasttech has best prices.
Go with an iStick 50w man, 50 watts of power, USB recharging, very long battery life, and it is like 50 bucks. You could get a cheap dripper of FT and a tank and you would be set with the best of both worlds.
As had been said but worth repeating it's a personal preference.
I've collected a few mods and my suggestion for a startup kit - is get a regulated mod that goes up to 30 watts with a 510 connector, I love my IPV mini - 5 to 30 watts has PWM and DC-DC, with PWM you set it and leave it alone if you want DC it's there also. I have a special need sometimes to use the 5 to 5.5 watt setting it's good to have. I picked it up for $39.95 also my goto tanks are three fogger 5's and a mini fogger - all top fill tanks. fogger 5 around $25.00 or less
I'd pick up a subtank mini and an istick 50w if I were you.
The subtank mini is 22mm in diameter so don't be put off by the name. It comes with a couple of coil heads and an rba base to practice on. The istick 50w will last you all day and has usb charging with a built in ohm meter. Practice with that and pick up a mech/dripper after you have your bearings.
You can acquire those two, cotton, and a spool of 26g for under 100 bones and have a solid/safe setup.
Bad news: Mech mods and noobs do not mix well.
Good news: The new high-wattage regulated boxes are taking the place of mech mods.
Advice: Up your budget a bit and take a hard look at the sigelei 100w plus box. You should be able to find it under $80. It'll be an awesome device that will make it easier and safer to rip clouds. If 50w will do you I can personally vouch for the sigelei 50w v2 which I've seen as low as $55. To be honest, some of these cheap mechanical clones are pretty crappy anyway.
Sigelei 100W (PLUS) Box Mod - Eciggity
Sigelei 50W v2 Box Mod - Eciggity
Advice: I always shop ebay for RDAs. My favorite brand is EHPro and I avoid Tobeco at all costs. I prefer flavor over clouds and my favorite is the EHPro Veritas which can be had for $20.
Advice: Start with 26g wire. I buy from Temco via ebay. Organic cotton from drugstore at $4.
Can anyone chime in on what batteries and charger would be best these days?
I think it is worth it to save for the Sigelei 100w Plus box.
Personally, for what you are looking to spend and get I'm gonna back up what some others have already posted. Kanger Subtank Mini with an iStick 50 watt. The iStick is very portable (fits lightly inside a shirt pocket), goes up to 50 watts for sub-ohming, has 4400 mah battery (mine stays charged for 4 days!), can change wattage in . increments for detail and has a good reputation everywhere. Price can be found for just under 50 bucks if you shop around. The Kanger Subtank uses pre-built coils that will handle up to 30 watts but has an RBA for building. And the flavor is as close to a dripper as I've ever gotten out of a tank. I got this combo for $86 from vapenw.com.
A lot of people are recommending the iStick and the Subtank and another person recommended the Sigelei 100w Plus with the Subtank Mini or the Aspire Atlantis. between these, suggestions?
To the original poster I'm not quite sure if you fully understand what these guys are telling you. You MUST understand what you are doing if you take the Mech mod route (which appears to be what your buddy has) you absolutely need an OHM meter (and knowledge) to ensure you won't blow your battery up in your face. I can't believe your buddy is building coils without an OHM meter, not as in wow that's awesome can't believe it. But wow that's incredibly stupid. The Regulated mods these guys are recommending are perfect because they have built in safety features that would prevent you from accidently creating something dangerous. With a little bit of knowledge you can use one of these regulated mods and blow bigger clouds than your buddy, which is what I think your after anyway. I apologize if any of that was offending to you, but the buddy not having an OHM meter bit probably put some bad pictures in more people's heads than just my own. Good luck my friend.
P.S. All it takes is for you to not wrap that coil enough times or use the wrong gauge wire in conjuction and that Mech mod can start a fire or blow up. It's that easy.
A lot of people are recommending the iStick and the Subtank and another person recommended the Sigelei 100w Plus with the Subtank Mini or the Aspire Atlantis. between these, suggestions?