Martin Logan Ascent i vs. Odyssey

I've just completed an in-home trial of the Ascent i's, and was very impressed with them. My dealer does not carry the Odysseys, and I haven't had a very good description of what might be gained by going to the Odyssey. The spec sheet for both models says they each go down to 35Hz. Does anyone have any experience with both models? (my room is 18 x18, I have Classe CAM200 monoblocks, 400W into 4 ohms).

thanks, Bill
I recently purchased a set of odyssey's after listening to Ascents they did sound a little thin to me. I purchased the Odysseys knowing full well that they would sound fuller. More or less because of the 2 speaker placement (which the ascents do not have). I have matched the Odyssey with an aerial sw12 sub (and i don't think you would be happy running without a sub) and I am very very pleased.

I am pushing the speakers with a yamaha Rx-z9, Although I need to push it from -79db to about -30db they sound clear regardless of what i'm pushing thru them. Looking back I'm very happy I didn't go with the ascents. Besides for the price I bought them here on audiogon the ody's were cheaper than the ascents (well not quite but close enuff)... sorry if i come off like a stereophile noob but as a pro-musician i do have fairly good ears... I'd also reccomend listining to B&W nautilis revels and paradigms... imo the soundstage was less... but if my room 30x20 was for music and not HT I would have gone for the revels....
I have owned both the Ascents and Odysseys.
I now have a pair of Prodigy's which I run with tube mono blocks. I have had these around a year now.
I have always ran tube amps with Martin Logan's speakers, while the Ascents did lack some in the bass I never felt the needed a sub.
The Odysseys are excellent speakers with better bass then the Ascents and overall a bigger sound stage, and again I personally never thought the needed a sub, I have always had plenty off bass,I guess it depends on your system and what you are powering them with.
They love the power especially the Bigger Odysseys and Prodigy's, if you under power them I can see why the bass might not be there.
I think your Classe CAM200 monoblocks will mate very well with both but in the long run you will be allot happier with the Odysseys.
Good Luck.
Thanks for all the replies.

I did end up getting the Odysseys. They are pretty well broken in now, and I am very impressed with the transition to the mid-bass- a fuller sound vs. what I remember of the Ascents. I am still playing with room placement- sometimes the bass is great, sometimes a bit shy. Seems like if I back them closer to the wall the bass gets reinforced, but at some point the soundstage collapses a bit and the Martin Logan magic diminishes (not bad, but a noticeable change).

I had the Ascent and Odyssey too. Ascent was too weak in the bass. I didn't like the integration of the bass driver and stat on the odyssey. I ended up with the Wilson Sophia instead.
I have the Ascent I's and pair them with Velodyne SPL-1500Rs. The Rs are fantastic and blend seamlessly with the Ascents once set up properly. I do have an acoustically treated room which helps, but have never wished for a larger soundstage. Of course amp choice and Pre choice is going to have an effect on this as well. My room is 13.8 X 24.8 X 8ft and the soundstage is beyond the speakers width, and very 3 dimensional. Although I don't think I would gain anything from the Odysseys (primarly the Odyssesys really only improved the bass in my listening sessions), I do often wonder if a move up to Prodigy's are worth it. It seems like it would be with the better specs and larger Stat panel. Although the summits are phenomenal, I really enjoy the look of the older models. Completely subjective of course.