Quoted from slochar:

High speed. Once you master the xenon tube shot there's not a lot else to do the mb doesn't have a point other than hey it's multiball. Xenon definitely better av package though.
High speed can get old too but there more than one way to play it at least.

Quoted from RustyLizard:

I kept Xenon and sent HS down the road a ling time ago. Note that I have a larger collection. I love System 11’s and old Ballys. In a small collection I wouldn’t keep either one. That being said my opinion won’t help you because Jungle Lord is the best game ever.

Quoted from koji:

Actually, it's quite a challenge in HS to avoid the ramp after the jackpot, and go specifically for stoplights, get them all and you light an extra ball.
Pin-bot has a similar rule. It's amazing how many don't know about this little rule, but it adds a neat layer of depth, as it is quite difficult to achieve.

Quoted from koji:

A clean shot should go 100% of the time. Mine is set up like this anyway, even with the old original ramp. I'm told the Freeplay 40 ones improve the smoothness going up. Nothing more frustrating than not making a shot when you did everything right to normally make it happen. I suspect this was part of the reason you moved it along so quickly.. I would too!

Quoted from spinout:

Tough one! I agree with the folks here that say to get both.
That said, if you can only afford one (and I have 2 kids so I understand!), I would go with High Speed.
Don't get me wrong, I love me some Xenon, and I almost bought a Xenon twice because she literally has some of the best looking artwork outside Magic Girl and people played the hell out of them (just look at the burned up playfields on most).
Sure the shots are limited and once you master that tube shot, you more or less mastered the game, but again - that backglass and playfield art is just amazing and play isn't bad by any means... but I still think High Speed.