Software

You need to differentiate between electriCAL, and electRONIC schematics and simulation.

Sorry, electronic engineering.

I used LTspice but found it fairly difficult to use therefore I was looking at other options.

The others are not any easier. It's like anything else, you have to get used to the way a particular software package works. I've used Pspice, LT Spice, EMTP, Cadence, Mentor Graphics (DxDesigner, Expedition), Saber, FutureNet, ORCad, etc. Each package has their own learning curves.

FWIW, the engineers at my place of work each with 30+ years experience, use LT Spice for most of our simulations because it is quick and easy for smaller circuits. We have much more powerful tools available for our use, but LT Spice is able to handle most of our simulation needs.

Good luck with your quest. (Check out on-line tutorials for LT Spice. They can help you. There are dozens of them out there on the 'Net.)

https://www.google.com/search?source=hp&ei=M6gaW7uTBYeBzwKUz4E4&q=tutorial+LTSPice&oq=tutorial+LTSPice&gs_l=psy-ab.3..0j0i22i30k1l9.621.5135.0.5337.18.16.1.1.1.0.136.1768.2j14.16.0....0...1c.1.64.psy-ab..0.18.1762...0i131k1j0i10k1j0i22i10i30k1.0.1teo7ZumWk0

PencilAndPaper 1.0, without question.

What does <...best...> mean?

The best circuit design software with analysis is the free kind. That you will find at sites where a vendor sells components. Explore the home page carefully for www.DigiKey.com to find what you want.

Another vote for LTSpice.

Assuming you're talking mainly analogue simulation.

Best circuit design and simulation software are

1. Ngspice- It is part of gEDA project which is getting popular everyday.

2. CircuitLogix- This is a student version software by CircuitLogix that allows you to perform analog, digital and mixed mode circuit analysis and simulation.

3. Multisim- This is also a student version circuit simulation software from National instruments. The features of this software include exploring breadboard in 3D before lab assignment submission, create printed circuit boards (PCB) etc. Breadboard simulation is also possible with Multisim circuit simulator.

4. PSSPICE- This is most preferred paid circuit simulation software. This is a mixed signal, industry standard circuit simulator.

try Altium