I'm sorry but I can't agree with playing snooker with a pool cue is easier. For a start you can't really pick out much of the cue ball if you like to have your chin on the cue, the tip, even on say a Z2 is far far too big. I play with a 10.5mm Parris cue for pool, and even that would be too big for snooker, in fact I found it was too big for snooker hence why it became my pool cue. I've never had any issues going 3, 4 or 5 rails with a snooker cue, nor have I had issues with deep screw or extreme side.
One thing I have had issues with is the tip. I go through a tip every few weeks. I use Elkmaster tips and they need a lot of shaping with the big heavy cue ball. You can use a layered snooker tip which would last longer but I'm not a fan of the Kamui Black snooker tips.
Like with any cue, you don't want a cheap one. Preferably you want one that's hand made and from Britain. They can get pricey so it comes down to whether the price is worth tying something new. If you get a cheap crappy cue from china then you will hate it and could miss out ever trying a nice quality made snooker cue.