When I watched a recent Dunover production, whose videos I have enjoyed for nearly 2 years, I think he took a big chunk off the trada rhino rtp the other day with a large cheetah win.
I am a bit torn between the new and old version, I find the new version tends to give me more retriggers in the bonus, I can still play the old version at whill, betfair and virgin but it tends to eat my balance faster.
I've had my best times x win on the new version: 216 ways of rhino at 40p stake @£648, however I think the old version was more capable of being streaky and you could get several good wins over a week. Although I think the old version also started to change prior to the new html version coming out, the bigs wins disappeared.
Its still a very addictive game though even after all these years, I don't know why sg/williams didn't take the rhino format and do other themes, they made several colossal reel type games but only 1 rhino type with its potential for big wins. I've played spartacus and giant's gold alot and you could never win £648 from a 40p spin, in fact when I started to play rhino I thought what a waste of money I had spent on the colossal reel games for bugger all in return and yet their rtp is slightly higher than rhino I think.
Even today I played rhino at coral, £10 deposit, got to £30 then went and played giants gold as it had hammered me the other day, it decided to hammer me again, it took the whole £30 at 30p spins with no bonus, foolishly I thought I'm going to try and get a bonus, £50 later at 40p spins and still with no bonus I had to call it a day. My worst shame was when I won over £1800 on the rhino, and then got tied up with that frigging giant's gold and it took £600 at £1.20 and in return gave me one bonus for about £19.
A recent tactic i've tried if the rhino is raping rather than raging, is to switch to montezuma, and recently I got a £52 win at 30p, which I then promptly donated to the bonanza relief cause.
[sorry for the length of reply, i'm a newbie at CM, but I must learn to be more succinct]