I really enjoy my 1.2ohm kayfun clone on my mech, which is 15watts. Pure bliss and simplicity on its own.
This is my exact build on my mechs and vv/vw as well. Same ohms and atty. I have not put down my mechs except for building since I got my first about 3 weeks ago. I love em. I went the route of being totally electronically naive, to reading and talking to people, and started with a kayfun. My first build was successful, and I'm an inpatient shaky handed guy.
Maybe start with an rba, kayfun lites especially the EHPro V2 are super easy and give great flavor. For me, once I realized I could build, I realized it was time for a mech. They're cheap if you go the clone route, too, so do some research and do it is my advice. Also, that kayfun lite v2 can be had on eBay for about 31 bucks with free shipping. Mine arrived in two days, plenty of u.s. Vendors.
Additionally, you can run tanks on mechs, as others have said, and kanger just released .8 ohm coils I think? I know they make around 1.5 ohm ones, both of those would be great on a mech. Have fun, it turned vaping into a hobby for me and I love it.