What's the best blogging service?

Hello fellow Vergens (that sounds so weird),

I'm fairly new to the world of blogging, and I have some questions to ask those who may be more experienced in this field. First of all, a little background. I'm currently a junior in high school, and I recently decided to start a tech blog. I decided to use Tumblr. Why? Well, I'm not quite sure actually.

As of now, I've got my blog (called Future Nostalgia btw!) up and its been going alright so far. However, I've run into some problems that I probably should have realized or anticipated prior to the start of the blog. For one thing, not many of my friends use Tumblr, and it isn't as widespread as I'd hoped. In addition, unless I'm completely blind, there isn't a traditional commenting system, which I would really like to have. Thus, I have decided to look for a new place to call home for my blog.

And that's why I'm here. So, basically, here are my questions for you:

1) What's the best blogging platform out there? Pros/cons?

2) What's the best way to get a blog noticed?

3) I know it's far too early now, but if a blog were to do fairly well, how would one go about obtaining devices to review from companies?

4) Any general advice?

I just want to thank you ahead of time. Your help is sincerely appreciated!