Hi Red K,
I was in your position a few months ago and I understand your predicament. I bought a Genesis Pro 60 whilst I was on course at NETT. This was fine until my first big job, a bathroom with 10mm thick 600x300mm porcelain. I invested in a TX 700N from Dave at Trade Tiler, it was perfect for those hard tiles, eating the porcelain up for breakfast! It is big though. I have since bought a TS 40 Plus and this has turned into a real workhorse, I think I use it daily, its limitations are its size and the fact that it isn't any good for cutting on the diagonal with the breaker being fixed at the top. My advice is buy the best that you can afford and you will not go wrong with quality tools, they will pay for themselves very quickly.
Good luck.
Steve