I haven't used a "universal" developer for film since the 1950s, and I've never used Paterson Universal for anything - not a condemnation, just that I've always used other products and I'm overly conservative. The best developer to use is the one that gives you the results you want when used in the way that you prefer to work. Since you are new to this game, the best advice I can offer is to see what you can easily get, and experiment a little. There is a thread going running a poll on "what's your favorite developer" and you can see who uses what.
For the record, I'm down for Rodinal which I like (amongst other reasons) for its one-shot use, extreme economy, flexibilty and amazing shelf life. I am intending to try Paterson Acutol again (I last used it in about 1964, so I should probably give it another go) which gave amazingly (to me, then) sharp negatives on PanF.
The only caution I will give is if you buy developer in a shop, check carefully to see if it has a "best before" date, and is still within it. I was caught once...