Having started with Esprit4 then Esprit5 then 5Inf and nor finally 6Inf I'd say if you can afford it yes go for 6Infinite. The more you get into it the more you'll want the built in extras. I'm glad I did even though I'm not what would be called a 'power' user.

" Try and be nice to people, avoid eating fat, read a good book every now and then, get some walking in, and try and live together in peace and harmony with people of all creeds and nations."
-Monty Python